./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.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_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 93be47e769f402898feb9056306e89058f4f5d77 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:27:25,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:27:25,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:27:25,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:27:25,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:27:25,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:27:25,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:27:25,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:27:25,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:27:25,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:27:25,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:27:25,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:27:25,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:27:25,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:27:25,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:27:25,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:27:25,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:27:25,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:27:25,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:27:25,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:27:25,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:27:25,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:27:25,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:27:25,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:27:25,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:27:25,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:27:25,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:27:25,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:27:25,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:27:25,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:27:25,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:27:25,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:27:25,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:27:25,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:27:25,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:27:25,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:27:25,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:27:25,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:27:25,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:27:25,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:27:25,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:27:25,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:27:25,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:27:25,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:27:25,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:27:25,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:27:25,246 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:27:25,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:27:25,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:27:25,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:27:25,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:27:25,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:27:25,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:27:25,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:27:25,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:27:25,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:27:25,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:27:25,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:27:25,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:27:25,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:27:25,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:27:25,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:27:25,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:27:25,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:27:25,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:27:25,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:27:25,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:27:25,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:27:25,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:27:25,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:27:25,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:27:25,260 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_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93be47e769f402898feb9056306e89058f4f5d77 [2020-11-29 21:27:25,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:27:25,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:27:25,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:27:25,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:27:25,541 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:27:25,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-11-29 21:27:25,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/data/daf004ca3/ee91adf8b3814224b1b4cfbd111e8f27/FLAGad94adaa6 [2020-11-29 21:27:26,039 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:27:26,040 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-11-29 21:27:26,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/data/daf004ca3/ee91adf8b3814224b1b4cfbd111e8f27/FLAGad94adaa6 [2020-11-29 21:27:26,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/data/daf004ca3/ee91adf8b3814224b1b4cfbd111e8f27 [2020-11-29 21:27:26,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:27:26,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:27:26,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:27:26,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:27:26,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:27:26,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727083f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26, skipping insertion in model container [2020-11-29 21:27:26,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:27:26,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:27:26,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:27:26,647 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:27:26,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:27:26,710 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:27:26,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26 WrapperNode [2020-11-29 21:27:26,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:27:26,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:27:26,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:27:26,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:27:26,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:27:26,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:27:26,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:27:26,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:27:26,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... [2020-11-29 21:27:26,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:27:26,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:27:26,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:27:26,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:27:26,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:27:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:27:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:27:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:27:27,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:27:27,179 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 21:27:27,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:27:27 BoogieIcfgContainer [2020-11-29 21:27:27,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:27:27,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:27:27,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:27:27,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:27:27,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:27:26" (1/3) ... [2020-11-29 21:27:27,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694cfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:27:27, skipping insertion in model container [2020-11-29 21:27:27,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:27:26" (2/3) ... [2020-11-29 21:27:27,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694cfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:27:27, skipping insertion in model container [2020-11-29 21:27:27,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:27:27" (3/3) ... [2020-11-29 21:27:27,197 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2020-11-29 21:27:27,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:27:27,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 21:27:27,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 21:27:27,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:27:27,278 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:27:27,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:27:27,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:27:27,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:27:27,279 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:27:27,279 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:27:27,279 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:27:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 21:27:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 21:27:27,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:27,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:27:27,308 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 21:27:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 21:27:27,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:27,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081583599] [2020-11-29 21:27:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:27,500 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 21:27:27,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081583599] [2020-11-29 21:27:27,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:27:27,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:27:27,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098070518] [2020-11-29 21:27:27,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:27:27,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:27,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:27:27,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:27:27,528 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 21:27:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:27,551 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 21:27:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:27:27,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 21:27:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:27,561 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:27:27,561 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 21:27:27,565 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 21:27:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 21:27:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 21:27:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 21:27:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 21:27:27,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 21:27:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:27,617 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 21:27:27,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:27:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 21:27:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 21:27:27,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:27,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:27:27,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:27:27,641 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 21:27:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 21:27:27,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:27,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576693924] [2020-11-29 21:27:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:27,801 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 21:27:27,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576693924] [2020-11-29 21:27:27,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:27:27,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:27:27,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905606532] [2020-11-29 21:27:27,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:27:27,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:27,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:27:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:27:27,805 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-29 21:27:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:27,944 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-29 21:27:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:27:27,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 21:27:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:27,946 INFO L225 Difference]: With dead ends: 55 [2020-11-29 21:27:27,946 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 21:27:27,947 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 21:27:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 21:27:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-11-29 21:27:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:27:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-29 21:27:27,966 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-11-29 21:27:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:27,966 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-29 21:27:27,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:27:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-29 21:27:27,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:27:27,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:27,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:27,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:27:27,968 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 21:27:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 21:27:27,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:27,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791797411] [2020-11-29 21:27:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:27,984 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:27,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090950376] [2020-11-29 21:27:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:28,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:27:28,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:28,133 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 21:27:28,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791797411] [2020-11-29 21:27:28,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:28,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090950376] [2020-11-29 21:27:28,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:27:28,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:27:28,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805108980] [2020-11-29 21:27:28,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:27:28,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:27:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:27:28,136 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-11-29 21:27:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:28,253 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 21:27:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:27:28,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 21:27:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:28,254 INFO L225 Difference]: With dead ends: 50 [2020-11-29 21:27:28,255 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 21:27:28,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 21:27:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 21:27:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 21:27:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:27:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 21:27:28,264 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 21:27:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:28,264 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 21:27:28,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:27:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 21:27:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:27:28,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:28,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:28,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 21:27:28,485 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 21:27:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 21:27:28,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:28,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037502010] [2020-11-29 21:27:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:28,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:28,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47796915] [2020-11-29 21:27:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:27:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:28,593 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 21:27:28,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037502010] [2020-11-29 21:27:28,594 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:28,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47796915] [2020-11-29 21:27:28,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:27:28,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:27:28,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979609768] [2020-11-29 21:27:28,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:27:28,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:27:28,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:27:28,596 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 21:27:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:28,714 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-11-29 21:27:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:27:28,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 21:27:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:28,717 INFO L225 Difference]: With dead ends: 50 [2020-11-29 21:27:28,717 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 21:27:28,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 21:27:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 21:27:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-29 21:27:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 21:27:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-29 21:27:28,731 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-11-29 21:27:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:28,732 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-29 21:27:28,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:27:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-29 21:27:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:27:28,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:28,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:28,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:28,934 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 21:27:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2079810332, now seen corresponding path program 1 times [2020-11-29 21:27:28,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:28,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189534110] [2020-11-29 21:27:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:28,946 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:28,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027850455] [2020-11-29 21:27:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:28,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:27:28,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:29,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189534110] [2020-11-29 21:27:29,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:29,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027850455] [2020-11-29 21:27:29,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:29,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:27:29,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605712374] [2020-11-29 21:27:29,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:27:29,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:27:29,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:27:29,043 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-11-29 21:27:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:29,198 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 21:27:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:27:29,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:27:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:29,200 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:27:29,200 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 21:27:29,201 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 21:27:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 21:27:29,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-11-29 21:27:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 21:27:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 21:27:29,214 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-29 21:27:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:29,215 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 21:27:29,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:27:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 21:27:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:27:29,217 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:29,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:29,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:29,433 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 21:27:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1538122751, now seen corresponding path program 1 times [2020-11-29 21:27:29,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:29,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083592148] [2020-11-29 21:27:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:29,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:29,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016008907] [2020-11-29 21:27:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:27:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:29,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083592148] [2020-11-29 21:27:29,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:29,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016008907] [2020-11-29 21:27:29,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:29,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:27:29,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235299148] [2020-11-29 21:27:29,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:27:29,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:29,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:27:29,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:27:29,545 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 21:27:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:29,707 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-11-29 21:27:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:27:29,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 21:27:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:29,708 INFO L225 Difference]: With dead ends: 59 [2020-11-29 21:27:29,708 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 21:27:29,709 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 21:27:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 21:27:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-29 21:27:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 21:27:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 21:27:29,721 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-11-29 21:27:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:29,722 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 21:27:29,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:27:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 21:27:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:27:29,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:29,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:29,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:29,925 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 21:27:29,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:29,925 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 21:27:29,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:29,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151014187] [2020-11-29 21:27:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:29,945 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:29,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252243025] [2020-11-29 21:27:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:30,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:27:30,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:30,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151014187] [2020-11-29 21:27:30,061 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:30,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252243025] [2020-11-29 21:27:30,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:30,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:27:30,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607556976] [2020-11-29 21:27:30,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:27:30,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:27:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:27:30,062 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 21:27:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:30,206 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-29 21:27:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:27:30,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:27:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:30,208 INFO L225 Difference]: With dead ends: 57 [2020-11-29 21:27:30,208 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 21:27:30,208 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 21:27:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 21:27:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 21:27:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 21:27:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 21:27:30,223 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 18 [2020-11-29 21:27:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:30,223 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 21:27:30,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:27:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 21:27:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 21:27:30,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:30,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 21:27:30,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 21:27:30,440 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 21:27:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash 789154926, now seen corresponding path program 2 times [2020-11-29 21:27:30,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:30,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691057736] [2020-11-29 21:27:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:30,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:30,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860323450] [2020-11-29 21:27:30,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:30,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:27:30,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:27:30,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:27:30,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:30,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691057736] [2020-11-29 21:27:30,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:30,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860323450] [2020-11-29 21:27:30,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:30,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:27:30,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927704631] [2020-11-29 21:27:30,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:27:30,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:30,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:27:30,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:27:30,575 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-11-29 21:27:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:30,760 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-29 21:27:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:27:30,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 21:27:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:30,762 INFO L225 Difference]: With dead ends: 70 [2020-11-29 21:27:30,762 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 21:27:30,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 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 21:27:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 21:27:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-11-29 21:27:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:27:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 21:27:30,779 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-11-29 21:27:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:30,780 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 21:27:30,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:27:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 21:27:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 21:27:30,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:30,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 21:27:31,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:31,008 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 21:27:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1831141167, now seen corresponding path program 2 times [2020-11-29 21:27:31,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:31,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741877268] [2020-11-29 21:27:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:31,019 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517251628] [2020-11-29 21:27:31,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:31,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:27:31,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:27:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 21:27:31,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:31,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741877268] [2020-11-29 21:27:31,165 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:31,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517251628] [2020-11-29 21:27:31,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:31,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:27:31,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882604969] [2020-11-29 21:27:31,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:27:31,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:27:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:27:31,167 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 6 states. [2020-11-29 21:27:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:31,375 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-11-29 21:27:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:27:31,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 21:27:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:31,377 INFO L225 Difference]: With dead ends: 67 [2020-11-29 21:27:31,377 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 21:27:31,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:27:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 21:27:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-11-29 21:27:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 21:27:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-29 21:27:31,385 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-11-29 21:27:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:31,385 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-29 21:27:31,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:27:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-29 21:27:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 21:27:31,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:31,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 21:27:31,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:31,610 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 21:27:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:31,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-11-29 21:27:31,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:31,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663039632] [2020-11-29 21:27:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:31,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774023262] [2020-11-29 21:27:31,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:31,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 21:27:31,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:27:31,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:27:31,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:31,704 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:27:31,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:27:31,761 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:27:31,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:27:33,828 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:27:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 21:27:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663039632] [2020-11-29 21:27:39,984 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774023262] [2020-11-29 21:27:39,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:27:39,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:27:39,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254281107] [2020-11-29 21:27:39,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:27:39,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:39,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:27:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:27:39,986 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-11-29 21:27:48,706 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-29 21:27:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:55,102 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-29 21:27:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:27:55,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-29 21:27:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:55,107 INFO L225 Difference]: With dead ends: 56 [2020-11-29 21:27:55,107 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:27:55,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:27:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:27:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:27:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:27:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-29 21:27:55,115 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 26 [2020-11-29 21:27:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:55,116 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-29 21:27:55,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:27:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-29 21:27:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 21:27:55,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:55,126 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:27:55,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 21:27:55,352 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 21:27:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1873493846, now seen corresponding path program 1 times [2020-11-29 21:27:55,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:55,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588675314] [2020-11-29 21:27:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:55,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:55,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416000413] [2020-11-29 21:27:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:27:55,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:27:55,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:27:55,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588675314] [2020-11-29 21:27:55,479 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:55,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416000413] [2020-11-29 21:27:55,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:55,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:27:55,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043544647] [2020-11-29 21:27:55,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:27:55,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:27:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:27:55,481 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-11-29 21:27:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:55,563 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 21:27:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:27:55,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 21:27:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:55,565 INFO L225 Difference]: With dead ends: 62 [2020-11-29 21:27:55,565 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:27:55,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:27:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:27:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:27:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:27:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-29 21:27:55,579 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 27 [2020-11-29 21:27:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:55,579 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-29 21:27:55,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:27:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-29 21:27:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 21:27:55,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:55,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 21:27:55,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:55,812 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 21:27:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash 600720320, now seen corresponding path program 3 times [2020-11-29 21:27:55,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:55,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184293593] [2020-11-29 21:27:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:55,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:55,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546407872] [2020-11-29 21:27:55,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/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 21:27:55,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:27:55,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:27:55,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 21:27:55,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:55,950 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:27:55,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:27:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 21:27:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184293593] [2020-11-29 21:27:56,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:27:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546407872] [2020-11-29 21:27:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:27:56,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:27:56,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507428474] [2020-11-29 21:27:56,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:27:56,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:27:56,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:27:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:27:56,042 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 5 states. [2020-11-29 21:27:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:27:56,262 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-29 21:27:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:27:56,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 21:27:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:27:56,265 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:27:56,265 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 21:27:56,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 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 21:27:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 21:27:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 21:27:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 21:27:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-29 21:27:56,275 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 30 [2020-11-29 21:27:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:27:56,276 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-29 21:27:56,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:27:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-29 21:27:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 21:27:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:27:56,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 21:27:56,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:56,492 INFO L429 AbstractCegarLoop]: === Iteration 13 === [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 21:27:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:27:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1766796195, now seen corresponding path program 3 times [2020-11-29 21:27:56,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:27:56,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034131824] [2020-11-29 21:27:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:27:56,501 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:27:56,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218411017] [2020-11-29 21:27:56,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:27:56,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:27:56,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:27:56,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 21:27:56,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:27:56,624 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:27:56,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:27:56,860 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 21:27:56,862 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:27:56,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:28:02,912 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 21:28:02,915 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:28:02,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:28:12,471 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:28:12,486 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:28:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 21:28:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034131824] [2020-11-29 21:28:13,229 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:28:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218411017] [2020-11-29 21:28:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:28:13,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 21:28:13,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453787240] [2020-11-29 21:28:13,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:28:13,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:28:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:28:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=65, Unknown=4, NotChecked=0, Total=90 [2020-11-29 21:28:13,231 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-11-29 21:28:19,000 WARN L193 SmtUtils]: Spent 5.58 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-29 21:28:26,053 WARN L193 SmtUtils]: Spent 6.74 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-29 21:28:42,214 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:29:05,292 WARN L193 SmtUtils]: Spent 17.56 s on a formula simplification that was a NOOP. DAG size: 36 [2020-11-29 21:29:18,990 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= (+ c_ULTIMATE.start_main_~t~0 .cse0) c_ULTIMATE.start_main_~s~0) (let ((.cse1 (= c_ULTIMATE.start_main_~s~0 (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) (= (+ (* c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) 1) (+ (* 2 c_ULTIMATE.start_main_~t~0) (* 4 .cse0))))) is different from false [2020-11-29 21:29:28,882 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2020-11-29 21:29:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:29:35,619 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-11-29 21:29:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:29:35,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-29 21:29:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:29:35,620 INFO L225 Difference]: With dead ends: 60 [2020-11-29 21:29:35,620 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 21:29:35,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 61.8s TimeCoverageRelationStatistics Valid=57, Invalid=147, Unknown=10, NotChecked=26, Total=240 [2020-11-29 21:29:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 21:29:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-11-29 21:29:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:29:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-11-29 21:29:35,630 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2020-11-29 21:29:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:29:35,630 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-11-29 21:29:35,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:29:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-11-29 21:29:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 21:29:35,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:29:35,631 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:29:35,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 21:29:35,856 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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 21:29:35,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:29:35,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1087565663, now seen corresponding path program 1 times [2020-11-29 21:29:35,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:29:35,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311163197] [2020-11-29 21:29:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:29:35,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:29:35,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816650591] [2020-11-29 21:29:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:29:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:29:35,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:29:35,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:29:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:29:36,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311163197] [2020-11-29 21:29:36,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:29:36,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816650591] [2020-11-29 21:29:36,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:29:36,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:29:36,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909364139] [2020-11-29 21:29:36,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:29:36,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:29:36,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:29:36,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:29:36,006 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 7 states. [2020-11-29 21:29:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:29:36,194 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-11-29 21:29:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:29:36,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-11-29 21:29:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:29:36,196 INFO L225 Difference]: With dead ends: 56 [2020-11-29 21:29:36,196 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 21:29:36,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:29:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 21:29:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-29 21:29:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 21:29:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-11-29 21:29:36,216 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 33 [2020-11-29 21:29:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:29:36,216 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-11-29 21:29:36,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:29:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-11-29 21:29:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-29 21:29:36,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:29:36,219 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:29:36,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 21:29:36,432 INFO L429 AbstractCegarLoop]: === Iteration 15 === [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 21:29:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:29:36,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1543959055, now seen corresponding path program 2 times [2020-11-29 21:29:36,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:29:36,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152551649] [2020-11-29 21:29:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:29:36,440 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:29:36,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234078050] [2020-11-29 21:29:36,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:29:36,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:29:36,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:29:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:29:36,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:29:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:29:36,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152551649] [2020-11-29 21:29:36,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:29:36,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234078050] [2020-11-29 21:29:36,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:29:36,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 21:29:36,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771764913] [2020-11-29 21:29:36,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:29:36,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:29:36,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:29:36,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:29:36,612 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 8 states. [2020-11-29 21:29:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:29:36,855 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-29 21:29:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:29:36,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-11-29 21:29:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:29:36,857 INFO L225 Difference]: With dead ends: 64 [2020-11-29 21:29:36,857 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:29:36,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:29:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:29:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:29:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:29:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-11-29 21:29:36,869 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 41 [2020-11-29 21:29:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:29:36,870 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-11-29 21:29:36,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:29:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-11-29 21:29:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 21:29:36,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:29:36,871 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:29:37,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 21:29:37,088 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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 21:29:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:29:37,089 INFO L82 PathProgramCache]: Analyzing trace with hash -354974339, now seen corresponding path program 3 times [2020-11-29 21:29:37,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:29:37,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039936474] [2020-11-29 21:29:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:29:37,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:29:37,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922477141] [2020-11-29 21:29:37,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:29:37,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:29:37,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:29:37,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 21:29:37,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:29:37,271 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:29:37,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:29:38,410 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 21:29:38,412 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:29:38,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:29:51,190 WARN L193 SmtUtils]: Spent 7.23 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 21:29:51,192 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:29:51,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:30:05,767 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 21:30:05,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:30:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-29 21:30:08,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039936474] [2020-11-29 21:30:08,162 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:30:08,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922477141] [2020-11-29 21:30:08,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:30:08,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 21:30:08,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772104308] [2020-11-29 21:30:08,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:30:08,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:30:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:30:08,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=63, Unknown=6, NotChecked=0, Total=90 [2020-11-29 21:30:08,164 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 10 states. [2020-11-29 21:30:19,905 WARN L193 SmtUtils]: Spent 11.04 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-29 21:30:38,630 WARN L193 SmtUtils]: Spent 18.54 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-29 21:30:57,894 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 21:31:12,939 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-11-29 21:31:38,615 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= c_ULTIMATE.start_main_~s~0 (+ c_ULTIMATE.start_main_~t~0 .cse0)) (= (+ (* 2 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~s~0)) (* 2 .cse0) (* 2 c_ULTIMATE.start_main_~s~0)) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~s~0) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) 1)) (= (+ (* c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) 1) (+ (* 2 c_ULTIMATE.start_main_~t~0) (* 4 .cse0))) (let ((.cse1 (= (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1) c_ULTIMATE.start_main_~s~0))) (or (and .cse1 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-11-29 21:31:58,287 WARN L193 SmtUtils]: Spent 16.36 s on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-11-29 21:32:18,102 WARN L193 SmtUtils]: Spent 14.28 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-11-29 21:32:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:32:18,969 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 21:32:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:32:18,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-11-29 21:32:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:32:18,975 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:32:18,975 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 21:32:18,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 122.4s TimeCoverageRelationStatistics Valid=75, Invalid=187, Unknown=14, NotChecked=30, Total=306 [2020-11-29 21:32:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 21:32:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 21:32:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 21:32:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-11-29 21:32:18,989 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-11-29 21:32:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:32:18,990 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-11-29 21:32:18,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:32:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-11-29 21:32:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-29 21:32:18,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:32:18,992 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:32:19,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:32:19,200 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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 21:32:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:32:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1827735264, now seen corresponding path program 2 times [2020-11-29 21:32:19,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:32:19,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793819553] [2020-11-29 21:32:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:32:19,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:32:19,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991418491] [2020-11-29 21:32:19,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:32:19,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 21:32:19,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:32:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:32:19,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:32:19,414 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:32:19,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:32:19,761 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:32:19,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:32:22,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:32:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-11-29 21:32:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793819553] [2020-11-29 21:32:28,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:32:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991418491] [2020-11-29 21:32:28,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:32:28,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:32:28,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562729469] [2020-11-29 21:32:28,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:32:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:32:28,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:32:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:32:28,429 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 7 states. [2020-11-29 21:32:28,850 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-11-29 21:32:29,495 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-29 21:32:38,288 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-11-29 21:32:44,652 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-11-29 21:32:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:32:46,703 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-11-29 21:32:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:32:46,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-11-29 21:32:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:32:46,771 INFO L225 Difference]: With dead ends: 52 [2020-11-29 21:32:46,771 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:32:46,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:32:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:32:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:32:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:32:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:32:46,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-11-29 21:32:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:32:46,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:32:46,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:32:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:32:46,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:32:46,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 21:32:46,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:32:58,795 WARN L193 SmtUtils]: Spent 11.62 s on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-11-29 21:33:22,577 WARN L193 SmtUtils]: Spent 23.78 s on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-11-29 21:33:35,710 WARN L193 SmtUtils]: Spent 13.13 s on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-11-29 21:33:54,063 WARN L193 SmtUtils]: Spent 18.35 s on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-11-29 21:35:24,221 WARN L193 SmtUtils]: Spent 1.50 m on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 21:35:48,643 WARN L193 SmtUtils]: Spent 24.42 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-11-29 21:35:48,646 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,646 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,646 INFO L277 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,647 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-11-29 21:35:48,647 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,648 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse0 2) (* .cse0 .cse0) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))) [2020-11-29 21:35:48,648 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,648 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-11-29 21:35:48,648 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,648 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse2 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse1 1)))))) [2020-11-29 21:35:48,648 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,648 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse7 (* ULTIMATE.start_main_~a~0 2))) (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ .cse7 1) ULTIMATE.start_main_~t~0)) (.cse4 (= (+ (* .cse2 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1))) (.cse5 (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse7 1)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse1 (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse2 4) (* ULTIMATE.start_main_~t~0 2))) .cse3 .cse4 .cse5) (and (= ULTIMATE.start_main_~s~0 (let ((.cse6 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse6 2) (* .cse6 .cse6) 1))) .cse1 .cse3 .cse4 .cse5)))) [2020-11-29 21:35:48,648 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-29 21:35:48,649 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (or (and (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))) (and (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))))) [2020-11-29 21:35:48,649 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-29 21:35:48,650 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:35:48,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:35:48 BoogieIcfgContainer [2020-11-29 21:35:48,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:35:48,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:35:48,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:35:48,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:35:48,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:27:27" (3/4) ... [2020-11-29 21:35:48,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:35:48,711 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 21:35:48,711 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:35:48,712 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:35:48,712 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:35:48,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_20171389-6cf2-4cec-9593-ee3fa7daf8b5/bin/uautomizer/witness.graphml [2020-11-29 21:35:48,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:35:48,766 INFO L168 Benchmark]: Toolchain (without parser) took 502332.28 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 84.6 MB in the beginning and 58.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:35:48,767 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:35:48,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.44 ms. Allocated memory is still 104.9 MB. Free memory was 84.2 MB in the beginning and 74.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:35:48,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.04 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 73.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:35:48,768 INFO L168 Benchmark]: Boogie Preprocessor took 34.81 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:35:48,769 INFO L168 Benchmark]: RCFGBuilder took 388.05 ms. Allocated memory is still 104.9 MB. Free memory was 71.8 MB in the beginning and 57.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:35:48,769 INFO L168 Benchmark]: TraceAbstraction took 501494.88 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 57.5 MB in the beginning and 61.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:35:48,770 INFO L168 Benchmark]: Witness Printer took 66.03 ms. Allocated memory is still 134.2 MB. Free memory was 61.6 MB in the beginning and 58.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:35:48,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.44 ms. Allocated memory is still 104.9 MB. Free memory was 84.2 MB in the beginning and 74.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.04 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 73.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.81 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 388.05 ms. Allocated memory is still 104.9 MB. Free memory was 71.8 MB in the beginning and 57.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 501494.88 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 57.5 MB in the beginning and 61.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.03 ms. Allocated memory is still 134.2 MB. Free memory was 61.6 MB in the beginning and 58.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1)) || (((1 == cond && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((counter <= 0 && a == 0) && t == 1) && s == a * a + a * 2 + 1) || (((t * t + 1 == a * a * 4 + t * 2 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + t) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || ((((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1)) || ((((s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1 && 1 == cond) && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 319.6s, OverallIterations: 17, TraceHistogramMax: 6, AutomataDifference: 248.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 181.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 338 SDslu, 712 SDs, 0 SdLazy, 725 SolverSat, 197 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 106.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 448 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 188.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 69 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 40 NumberOfFragments, 498 HoareAnnotationTreeSize, 8 FomulaSimplifications, 5397 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 413 FormulaSimplificationTreeSizeReductionInter, 181.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 66.0s InterpolantComputationTime, 413 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 60261 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1423 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 272/419 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...