./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 0036602275d14d2f63e3aedc245d67d50c1210f9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:32:35,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:32:35,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:32:35,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:32:35,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:32:35,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:32:35,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:32:35,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:32:35,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:32:35,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:32:35,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:32:35,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:32:35,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:32:35,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:32:35,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:32:35,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:32:35,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:32:35,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:32:35,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:32:35,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:32:35,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:32:35,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:32:35,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:32:35,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:32:35,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:32:35,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:32:35,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:32:35,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:32:35,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:32:35,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:32:35,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:32:35,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:32:35,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:32:35,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:32:35,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:32:35,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:32:35,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:32:35,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:32:35,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:32:35,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:32:35,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:32:35,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:32:35,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:32:35,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:32:35,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:32:35,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:32:35,479 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:32:35,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:32:35,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:32:35,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:32:35,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:32:35,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:32:35,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:32:35,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:32:35,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:32:35,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:32:35,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:32:35,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:32:35,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:32:35,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:32:35,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:32:35,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:32:35,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:32:35,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:32:35,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:32:35,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:32:35,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:32:35,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:32:35,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:32:35,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:32:35,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:32:35,486 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_470eef65-610b-4f56-9177-f9b19505b919/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2020-12-01 15:32:35,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:32:35,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:32:35,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:32:35,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:32:35,828 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:32:35,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-01 15:32:35,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/data/fc738ff1b/3a2805974fc0481c9c1613a9b7d47b23/FLAG51b70205b [2020-12-01 15:32:36,549 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:32:36,550 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-01 15:32:36,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/data/fc738ff1b/3a2805974fc0481c9c1613a9b7d47b23/FLAG51b70205b [2020-12-01 15:32:36,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/data/fc738ff1b/3a2805974fc0481c9c1613a9b7d47b23 [2020-12-01 15:32:36,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:32:36,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:32:36,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:32:36,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:32:36,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:32:36,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:32:36" (1/1) ... [2020-12-01 15:32:36,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337059f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:36, skipping insertion in model container [2020-12-01 15:32:36,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:32:36" (1/1) ... [2020-12-01 15:32:36,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:32:36,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:32:37,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:32:37,093 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:32:37,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:32:37,126 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:32:37,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37 WrapperNode [2020-12-01 15:32:37,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:32:37,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:32:37,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:32:37,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:32:37,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:32:37,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:32:37,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:32:37,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:32:37,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... [2020-12-01 15:32:37,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:32:37,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:32:37,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:32:37,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:32:37,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:32:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:32:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:32:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:32:37,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:32:37,608 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-01 15:32:37,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:37 BoogieIcfgContainer [2020-12-01 15:32:37,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:32:37,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:32:37,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:32:37,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:32:37,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:32:36" (1/3) ... [2020-12-01 15:32:37,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc912d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:32:37, skipping insertion in model container [2020-12-01 15:32:37,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:32:37" (2/3) ... [2020-12-01 15:32:37,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc912d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:32:37, skipping insertion in model container [2020-12-01 15:32:37,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:37" (3/3) ... [2020-12-01 15:32:37,635 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-12-01 15:32:37,664 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:32:37,683 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-01 15:32:37,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-01 15:32:37,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:32:37,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:32:37,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:32:37,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:32:37,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:32:37,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:32:37,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:32:37,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:32:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-01 15:32:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:32:37,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:37,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:32:37,797 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]=== [2020-12-01 15:32:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:37,808 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-12-01 15:32:37,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:37,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505369569] [2020-12-01 15:32:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:38,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505369569] [2020-12-01 15:32:38,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:38,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:32:38,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198211556] [2020-12-01 15:32:38,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:32:38,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:38,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:32:38,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:32:38,072 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-01 15:32:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:38,095 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-01 15:32:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:32:38,096 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-01 15:32:38,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:38,112 INFO L225 Difference]: With dead ends: 62 [2020-12-01 15:32:38,112 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 15:32:38,119 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 [2020-12-01 15:32:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 15:32:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-01 15:32:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-01 15:32:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-01 15:32:38,177 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-01 15:32:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:38,178 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-01 15:32:38,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:32:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-01 15:32:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:32:38,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:38,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:32:38,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:32:38,181 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]=== [2020-12-01 15:32:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-01 15:32:38,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:38,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947507842] [2020-12-01 15:32:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:38,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947507842] [2020-12-01 15:32:38,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:38,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:32:38,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127211781] [2020-12-01 15:32:38,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:32:38,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:38,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:32:38,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:32:38,394 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-01 15:32:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:38,648 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-01 15:32:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:32:38,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 15:32:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:38,653 INFO L225 Difference]: With dead ends: 55 [2020-12-01 15:32:38,654 INFO L226 Difference]: Without dead ends: 51 [2020-12-01 15:32:38,655 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 [2020-12-01 15:32:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-01 15:32:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-12-01 15:32:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-01 15:32:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-01 15:32:38,674 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-01 15:32:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:38,675 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-01 15:32:38,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:32:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-01 15:32:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:32:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:38,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:38,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:32:38,677 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]=== [2020-12-01 15:32:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-12-01 15:32:38,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:38,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293951387] [2020-12-01 15:32:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:38,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:38,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892644125] [2020-12-01 15:32:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:38,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:32:38,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:38,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293951387] [2020-12-01 15:32:38,939 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:38,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892644125] [2020-12-01 15:32:38,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:32:38,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:32:38,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425602044] [2020-12-01 15:32:38,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:32:38,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:32:38,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:32:38,943 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-12-01 15:32:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:39,096 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-01 15:32:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:32:39,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-01 15:32:39,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:39,107 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:32:39,107 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:32:39,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:32:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-01 15:32:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:32:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-01 15:32:39,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 8 [2020-12-01 15:32:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:39,117 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-01 15:32:39,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:32:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-01 15:32:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:32:39,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:39,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:39,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:32:39,345 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]=== [2020-12-01 15:32:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2079810332, now seen corresponding path program 1 times [2020-12-01 15:32:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:39,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766843395] [2020-12-01 15:32:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:39,361 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:39,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019177105] [2020-12-01 15:32:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:39,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:32:39,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:39,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766843395] [2020-12-01 15:32:39,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:39,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019177105] [2020-12-01 15:32:39,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:39,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:32:39,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470011047] [2020-12-01 15:32:39,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:32:39,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:32:39,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:32:39,510 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-01 15:32:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:39,646 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-12-01 15:32:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:32:39,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:32:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:39,649 INFO L225 Difference]: With dead ends: 62 [2020-12-01 15:32:39,649 INFO L226 Difference]: Without dead ends: 58 [2020-12-01 15:32:39,650 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 [2020-12-01 15:32:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-01 15:32:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-12-01 15:32:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-01 15:32:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-12-01 15:32:39,660 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-12-01 15:32:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:39,660 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-12-01 15:32:39,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:32:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-12-01 15:32:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:32:39,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:39,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:39,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:39,885 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]=== [2020-12-01 15:32:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:39,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1538122751, now seen corresponding path program 1 times [2020-12-01 15:32:39,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:39,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436525252] [2020-12-01 15:32:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:39,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:39,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847063783] [2020-12-01 15:32:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:40,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 15:32:40,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436525252] [2020-12-01 15:32:40,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847063783] [2020-12-01 15:32:40,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:40,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:32:40,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170918323] [2020-12-01 15:32:40,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:32:40,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:40,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:32:40,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:40,175 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2020-12-01 15:32:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:40,387 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-12-01 15:32:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:32:40,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-01 15:32:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:40,392 INFO L225 Difference]: With dead ends: 61 [2020-12-01 15:32:40,393 INFO L226 Difference]: Without dead ends: 47 [2020-12-01 15:32:40,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:32:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-01 15:32:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-01 15:32:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-01 15:32:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-01 15:32:40,412 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 16 [2020-12-01 15:32:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:40,412 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-01 15:32:40,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:32:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-01 15:32:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:32:40,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:40,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-01 15:32:40,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:40,641 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]=== [2020-12-01 15:32:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash 789154926, now seen corresponding path program 2 times [2020-12-01 15:32:40,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:40,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933800407] [2020-12-01 15:32:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:40,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:40,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530180419] [2020-12-01 15:32:40,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:40,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:32:40,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:32:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:32:40,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:40,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933800407] [2020-12-01 15:32:40,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:40,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530180419] [2020-12-01 15:32:40,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:40,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:32:40,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667432653] [2020-12-01 15:32:40,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:32:40,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:32:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:32:40,864 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-01 15:32:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:40,904 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-01 15:32:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:32:40,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-01 15:32:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:40,905 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:32:40,905 INFO L226 Difference]: Without dead ends: 32 [2020-12-01 15:32:40,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-01 15:32:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-01 15:32:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-01 15:32:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2020-12-01 15:32:40,913 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 22 [2020-12-01 15:32:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:40,913 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2020-12-01 15:32:40,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:32:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-12-01 15:32:40,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:32:40,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:40,915 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:41,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:41,141 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]=== [2020-12-01 15:32:41,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1306019888, now seen corresponding path program 1 times [2020-12-01 15:32:41,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:41,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788991627] [2020-12-01 15:32:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:41,153 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:41,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291764412] [2020-12-01 15:32:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:41,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-01 15:32:41,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:41,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788991627] [2020-12-01 15:32:41,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:41,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291764412] [2020-12-01 15:32:41,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:41,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:32:41,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581676475] [2020-12-01 15:32:41,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:32:41,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:41,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:32:41,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:32:41,341 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 6 states. [2020-12-01 15:32:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:41,460 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-12-01 15:32:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:32:41,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-01 15:32:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:41,462 INFO L225 Difference]: With dead ends: 32 [2020-12-01 15:32:41,462 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 15:32:41,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:32:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 15:32:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 15:32:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:32:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2020-12-01 15:32:41,477 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 23 [2020-12-01 15:32:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:41,478 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2020-12-01 15:32:41,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:32:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2020-12-01 15:32:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:32:41,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:41,479 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:41,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 15:32:41,696 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]=== [2020-12-01 15:32:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash -954474189, now seen corresponding path program 1 times [2020-12-01 15:32:41,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:41,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828876425] [2020-12-01 15:32:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:41,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:41,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906121149] [2020-12-01 15:32:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:32:41,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:41,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828876425] [2020-12-01 15:32:41,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:41,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906121149] [2020-12-01 15:32:41,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:41,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:32:41,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367216131] [2020-12-01 15:32:41,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:32:41,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:32:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:32:41,957 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand 7 states. [2020-12-01 15:32:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:42,074 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-12-01 15:32:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:32:42,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-12-01 15:32:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:42,075 INFO L225 Difference]: With dead ends: 30 [2020-12-01 15:32:42,075 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 15:32:42,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:32:42,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 15:32:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-01 15:32:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-01 15:32:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-12-01 15:32:42,080 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2020-12-01 15:32:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:42,081 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-12-01 15:32:42,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:32:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-12-01 15:32:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:32:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:42,082 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:42,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:42,293 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]=== [2020-12-01 15:32:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1873493846, now seen corresponding path program 1 times [2020-12-01 15:32:42,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:32:42,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776133863] [2020-12-01 15:32:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:32:42,313 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:32:42,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289061419] [2020-12-01 15:32:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/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 [2020-12-01 15:32:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:42,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:32:42,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:42,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776133863] [2020-12-01 15:32:42,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:32:42,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289061419] [2020-12-01 15:32:42,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:32:42,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:32:42,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818377713] [2020-12-01 15:32:42,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:32:42,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:32:42,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:32:42,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:32:42,591 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 8 states. [2020-12-01 15:32:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:42,725 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-01 15:32:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:32:42,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-01 15:32:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:42,726 INFO L225 Difference]: With dead ends: 28 [2020-12-01 15:32:42,727 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:32:42,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:32:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:32:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:32:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:32:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:32:42,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-01 15:32:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:42,729 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:32:42,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:32:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:32:42,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:32:42,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:32:42,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:32:43,360 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-01 15:32:43,616 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,617 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,617 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-01 15:32:43,617 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:32:43,617 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,618 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:32:43,618 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:32:43,618 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,618 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,620 INFO L258 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:32:43,620 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,621 INFO L258 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:32:43,622 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,622 INFO L258 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:32:43,622 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,623 INFO L258 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:32:43,623 INFO L262 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,623 INFO L258 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:32:43,623 INFO L262 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:32:43,623 INFO L265 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,624 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,625 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,625 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:32:43,625 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-01 15:32:43,625 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~a~0 2) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9)))) [2020-12-01 15:32:43,625 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-01 15:32:43,626 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:32:43,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:32:43 BoogieIcfgContainer [2020-12-01 15:32:43,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:32:43,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:32:43,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:32:43,689 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:32:43,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:32:37" (3/4) ... [2020-12-01 15:32:43,694 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:32:43,710 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-01 15:32:43,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:32:43,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:32:43,713 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:32:43,788 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_470eef65-610b-4f56-9177-f9b19505b919/bin/uautomizer/witness.graphml [2020-12-01 15:32:43,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:32:43,791 INFO L168 Benchmark]: Toolchain (without parser) took 6915.01 ms. Allocated memory was 104.9 MB in the beginning and 186.6 MB in the end (delta: 81.8 MB). Free memory was 80.1 MB in the beginning and 84.8 MB in the end (delta: -4.7 MB). Peak memory consumption was 76.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,792 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 62.2 MB in the beginning and 62.1 MB in the end (delta: 61.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:32:43,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.63 ms. Allocated memory was 104.9 MB in the beginning and 155.2 MB in the end (delta: 50.3 MB). Free memory was 80.0 MB in the beginning and 131.9 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,793 INFO L168 Benchmark]: Boogie Preprocessor took 22.93 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 129.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:32:43,794 INFO L168 Benchmark]: RCFGBuilder took 417.75 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 115.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,795 INFO L168 Benchmark]: TraceAbstraction took 6076.64 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 114.7 MB in the beginning and 88.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,795 INFO L168 Benchmark]: Witness Printer took 100.04 ms. Allocated memory is still 186.6 MB. Free memory was 88.0 MB in the beginning and 84.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:43,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 62.2 MB in the beginning and 62.1 MB in the end (delta: 61.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.63 ms. Allocated memory was 104.9 MB in the beginning and 155.2 MB in the end (delta: 50.3 MB). Free memory was 80.0 MB in the beginning and 131.9 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.93 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 129.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 417.75 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 115.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6076.64 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 114.7 MB in the beginning and 88.0 MB in the end (delta: 26.7 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. * Witness Printer took 100.04 ms. Allocated memory is still 186.6 MB. Free memory was 88.0 MB in the beginning and 84.8 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: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((s == 1 && a == 0) && t == 1) && 0 <= counter) || ((((1 <= counter && a == 1) && 1 == cond) && t == 3) && s == t + 1)) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) || ((((1 == cond && a == 2) && 2 <= counter) && s == t + 4) && s == 9)) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 == cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 == cond) && s == 1) && a == 0) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 184 SDslu, 271 SDs, 0 SdLazy, 389 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 31 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 251 HoareAnnotationTreeSize, 8 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 18829 SizeOfPredicates, 32 NumberOfNonLiveVariables, 680 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 12/58 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...