./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.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_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 572360d878facce0c5d840a57f70fa0d65d827a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:12:16,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:16,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:16,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:16,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:16,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:16,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:16,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:16,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:16,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:16,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:16,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:16,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:16,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:16,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:16,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:16,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:16,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:16,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:16,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:16,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:16,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:16,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:16,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:16,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:16,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:16,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:16,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:16,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:16,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:16,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:16,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:16,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:16,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:16,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:16,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:16,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:16,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:16,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:16,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:16,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:16,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:12:16,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:16,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:16,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:16,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:16,411 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:16,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:16,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:12:16,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:12:16,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:12:16,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:16,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:12:16,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:12:16,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:12:16,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:12:16,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:12:16,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:16,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:12:16,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:16,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:16,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:12:16,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:12:16,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:12:16,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:16,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:12:16,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:12:16,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:12:16,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:12:16,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:12:16,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:16,420 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_ee73fb0a-1abb-4c2b-8820-3039470ec851/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 572360d878facce0c5d840a57f70fa0d65d827a5 [2020-11-30 01:12:16,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:16,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:16,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:16,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:16,909 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:16,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-11-30 01:12:17,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/data/bc2bf79ac/787e7754824f4219ae2d02ab476973bd/FLAGd3073ff4b [2020-11-30 01:12:17,756 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:17,757 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2020-11-30 01:12:17,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/data/bc2bf79ac/787e7754824f4219ae2d02ab476973bd/FLAGd3073ff4b [2020-11-30 01:12:18,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/data/bc2bf79ac/787e7754824f4219ae2d02ab476973bd [2020-11-30 01:12:18,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:18,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:12:18,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:18,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:18,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:18,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea2b4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18, skipping insertion in model container [2020-11-30 01:12:18,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:18,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:18,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:18,432 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:18,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:18,504 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:18,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18 WrapperNode [2020-11-30 01:12:18,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:18,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:18,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:12:18,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:12:18,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:18,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:18,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:18,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:18,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... [2020-11-30 01:12:18,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:18,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:18,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:18,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:18,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:12:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:12:19,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:12:19,595 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 01:12:19,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:19 BoogieIcfgContainer [2020-11-30 01:12:19,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:12:19,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:12:19,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:12:19,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:12:19,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:12:18" (1/3) ... [2020-11-30 01:12:19,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7046c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:19, skipping insertion in model container [2020-11-30 01:12:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:18" (2/3) ... [2020-11-30 01:12:19,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7046c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:19, skipping insertion in model container [2020-11-30 01:12:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:19" (3/3) ... [2020-11-30 01:12:19,611 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2020-11-30 01:12:19,626 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:12:19,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:12:19,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:12:19,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:12:19,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:12:19,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:12:19,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:12:19,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:12:19,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:12:19,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:12:19,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:12:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 01:12:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:12:19,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:19,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:19,741 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]=== [2020-11-30 01:12:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:19,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:12:19,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:19,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958856589] [2020-11-30 01:12:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:20,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958856589] [2020-11-30 01:12:20,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:20,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:12:20,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483514193] [2020-11-30 01:12:20,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:12:20,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:20,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:12:20,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:12:20,075 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 01:12:20,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:20,104 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 01:12:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:12:20,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:12:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:20,122 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:12:20,122 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:12:20,132 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 [2020-11-30 01:12:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:12:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:12:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:12:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 01:12:20,199 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 01:12:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:20,200 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 01:12:20,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:12:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 01:12:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:12:20,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:20,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:20,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:12:20,203 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]=== [2020-11-30 01:12:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:12:20,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:20,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792392546] [2020-11-30 01:12:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:20,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792392546] [2020-11-30 01:12:20,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:20,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:12:20,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991169309] [2020-11-30 01:12:20,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:20,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:20,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:20,416 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-30 01:12:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:20,631 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 01:12:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:12:20,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:12:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:20,634 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:12:20,635 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:12:20,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:12:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-30 01:12:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 01:12:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-30 01:12:20,660 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-30 01:12:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:20,661 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-30 01:12:20,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-30 01:12:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:12:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:20,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:20,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:12:20,669 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]=== [2020-11-30 01:12:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 01:12:20,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:20,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887193523] [2020-11-30 01:12:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:20,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:20,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074199144] [2020-11-30 01:12:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:20,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:12:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:20,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887193523] [2020-11-30 01:12:20,866 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:20,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074199144] [2020-11-30 01:12:20,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:20,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:12:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409672658] [2020-11-30 01:12:20,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:20,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:20,869 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-30 01:12:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:21,058 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-30 01:12:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:12:21,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 01:12:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:21,061 INFO L225 Difference]: With dead ends: 50 [2020-11-30 01:12:21,061 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 01:12:21,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 01:12:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-30 01:12:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 01:12:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-30 01:12:21,072 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-30 01:12:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:21,073 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-30 01:12:21,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-30 01:12:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:12:21,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:21,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:21,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:12:21,296 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]=== [2020-11-30 01:12:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-30 01:12:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:21,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961101762] [2020-11-30 01:12:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:21,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:21,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660496979] [2020-11-30 01:12:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:21,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:12:21,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:21,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961101762] [2020-11-30 01:12:21,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:21,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660496979] [2020-11-30 01:12:21,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:21,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:12:21,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249063341] [2020-11-30 01:12:21,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:12:21,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:12:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:12:21,449 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-30 01:12:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:21,603 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-30 01:12:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:12:21,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:12:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:21,605 INFO L225 Difference]: With dead ends: 47 [2020-11-30 01:12:21,605 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:12:21,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:12:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-30 01:12:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:12:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-30 01:12:21,615 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-30 01:12:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:21,615 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-30 01:12:21,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:12:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-30 01:12:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:12:21,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:21,617 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:21,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:21,832 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]=== [2020-11-30 01:12:21,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-30 01:12:21,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:21,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439222592] [2020-11-30 01:12:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:21,848 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:21,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112087078] [2020-11-30 01:12:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:21,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:12:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:21,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439222592] [2020-11-30 01:12:21,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:21,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112087078] [2020-11-30 01:12:21,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:21,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:12:21,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403293484] [2020-11-30 01:12:21,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:12:21,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:12:21,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:21,977 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-30 01:12:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:22,154 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-30 01:12:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:12:22,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 01:12:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:22,156 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:12:22,156 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 01:12:22,157 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 [2020-11-30 01:12:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 01:12:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-30 01:12:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 01:12:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 01:12:22,175 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-30 01:12:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:22,175 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 01:12:22,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:12:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 01:12:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:12:22,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:22,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:22,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:22,378 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]=== [2020-11-30 01:12:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-30 01:12:22,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:22,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998856897] [2020-11-30 01:12:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:22,392 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:22,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51868900] [2020-11-30 01:12:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:22,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:12:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:22,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998856897] [2020-11-30 01:12:22,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:22,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51868900] [2020-11-30 01:12:22,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:22,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:12:22,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762529642] [2020-11-30 01:12:22,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:12:22,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:22,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:12:22,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:22,533 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-30 01:12:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:22,683 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-30 01:12:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:12:22,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 01:12:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:22,685 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:12:22,685 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 01:12:22,686 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 [2020-11-30 01:12:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 01:12:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-30 01:12:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:12:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-30 01:12:22,694 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-30 01:12:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:22,694 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-30 01:12:22,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:12:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-30 01:12:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:12:22,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:22,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:22,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:22,924 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]=== [2020-11-30 01:12:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:22,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-30 01:12:22,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:22,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870361604] [2020-11-30 01:12:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:22,934 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:22,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288993172] [2020-11-30 01:12:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:23,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:12:23,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:23,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870361604] [2020-11-30 01:12:23,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:23,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288993172] [2020-11-30 01:12:23,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:23,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:12:23,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622962467] [2020-11-30 01:12:23,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:12:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:12:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:23,068 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-30 01:12:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:23,221 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 01:12:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:12:23,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 01:12:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:23,223 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:12:23,224 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 01:12:23,224 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 [2020-11-30 01:12:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 01:12:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-30 01:12:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 01:12:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-30 01:12:23,232 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-30 01:12:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:23,233 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-30 01:12:23,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:12:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-30 01:12:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:12:23,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:23,234 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:23,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 01:12:23,460 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]=== [2020-11-30 01:12:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-30 01:12:23,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:23,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101598369] [2020-11-30 01:12:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:23,486 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:23,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061767179] [2020-11-30 01:12:23,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:23,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:12:23,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:23,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:12:23,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:23,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101598369] [2020-11-30 01:12:23,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061767179] [2020-11-30 01:12:23,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:23,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:12:23,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158738140] [2020-11-30 01:12:23,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:12:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:23,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:12:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:12:23,642 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-30 01:12:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:23,892 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-30 01:12:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:12:23,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-30 01:12:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:23,894 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:12:23,894 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 01:12:23,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:12:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 01:12:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-30 01:12:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 01:12:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-30 01:12:23,913 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-30 01:12:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-30 01:12:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:12:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-30 01:12:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:12:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:23,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:24,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:24,137 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]=== [2020-11-30 01:12:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-30 01:12:24,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:24,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627019442] [2020-11-30 01:12:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:24,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:24,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691538311] [2020-11-30 01:12:24,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:24,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:12:24,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:24,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 01:12:24,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:12:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627019442] [2020-11-30 01:12:24,370 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:24,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691538311] [2020-11-30 01:12:24,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:24,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:12:24,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221363232] [2020-11-30 01:12:24,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:12:24,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:12:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:12:24,372 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-30 01:12:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:24,676 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-30 01:12:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:12:24,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 01:12:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:24,678 INFO L225 Difference]: With dead ends: 64 [2020-11-30 01:12:24,678 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 01:12:24,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:12:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 01:12:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-11-30 01:12:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 01:12:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-30 01:12:24,688 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-11-30 01:12:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:24,689 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-30 01:12:24,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:12:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-30 01:12:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:12:24,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:24,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:24,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:24,915 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]=== [2020-11-30 01:12:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-30 01:12:24,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:24,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474997701] [2020-11-30 01:12:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:24,933 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:24,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809944408] [2020-11-30 01:12:24,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:25,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 01:12:25,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:25,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 01:12:25,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:25,051 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:25,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:25,121 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:25,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:27,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 01:12:33,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474997701] [2020-11-30 01:12:33,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:33,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809944408] [2020-11-30 01:12:33,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:33,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:12:33,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884266062] [2020-11-30 01:12:33,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:12:33,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:12:33,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:12:33,431 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 7 states. [2020-11-30 01:12:33,591 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-11-30 01:12:33,801 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-30 01:12:38,244 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-11-30 01:12:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:46,636 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-30 01:12:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:12:46,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-30 01:12:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:46,640 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:12:46,640 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 01:12:46,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:12:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 01:12:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-30 01:12:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 01:12:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-11-30 01:12:46,662 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 25 [2020-11-30 01:12:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:46,662 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-11-30 01:12:46,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:12:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-11-30 01:12:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:12:46,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:46,664 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:46,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 01:12:46,896 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]=== [2020-11-30 01:12:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:46,896 INFO L82 PathProgramCache]: Analyzing trace with hash 778492634, now seen corresponding path program 3 times [2020-11-30 01:12:46,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:46,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566317306] [2020-11-30 01:12:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:46,920 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:46,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911635373] [2020-11-30 01:12:46,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:47,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 01:12:47,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:12:47,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:47,064 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:47,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 01:12:47,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566317306] [2020-11-30 01:12:47,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:47,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911635373] [2020-11-30 01:12:47,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:12:47,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:12:47,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887914080] [2020-11-30 01:12:47,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:12:47,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:47,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:12:47,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:12:47,164 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-11-30 01:12:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:47,404 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-30 01:12:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:12:47,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-30 01:12:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:47,406 INFO L225 Difference]: With dead ends: 52 [2020-11-30 01:12:47,407 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 01:12:47,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:12:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 01:12:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-30 01:12:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 01:12:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-30 01:12:47,417 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 28 [2020-11-30 01:12:47,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:47,417 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-30 01:12:47,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:12:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-30 01:12:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:12:47,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:47,419 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:47,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:47,632 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]=== [2020-11-30 01:12:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:47,633 INFO L82 PathProgramCache]: Analyzing trace with hash 807298301, now seen corresponding path program 3 times [2020-11-30 01:12:47,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:47,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647924967] [2020-11-30 01:12:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:47,644 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:47,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172400954] [2020-11-30 01:12:47,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/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 [2020-11-30 01:12:47,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 01:12:47,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:47,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:12:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:47,790 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:47,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:48,099 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 01:12:48,102 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:48,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:57,549 WARN L193 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 01:12:57,552 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:57,553 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:13:08,420 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 01:13:08,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:13:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 01:13:08,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647924967] [2020-11-30 01:13:08,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:13:08,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172400954] [2020-11-30 01:13:08,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:13:08,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 01:13:08,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955161677] [2020-11-30 01:13:08,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:13:08,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:08,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:13:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=66, Unknown=3, NotChecked=0, Total=90 [2020-11-30 01:13:08,796 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2020-11-30 01:13:19,436 WARN L193 SmtUtils]: Spent 10.00 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-30 01:13:31,508 WARN L193 SmtUtils]: Spent 11.57 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-30 01:14:00,727 WARN L193 SmtUtils]: Spent 13.72 s on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 01:14:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:14:01,254 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-11-30 01:14:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:14:01,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-11-30 01:14:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:14:01,256 INFO L225 Difference]: With dead ends: 48 [2020-11-30 01:14:01,256 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:14:01,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 59.6s TimeCoverageRelationStatistics Valid=49, Invalid=130, Unknown=3, NotChecked=0, Total=182 [2020-11-30 01:14:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:14:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:14:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:14:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:14:01,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-30 01:14:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:14:01,258 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:14:01,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:14:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:14:01,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:14:01,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:14:01,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:14:17,950 WARN L193 SmtUtils]: Spent 16.33 s on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-30 01:14:31,132 WARN L193 SmtUtils]: Spent 13.18 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-11-30 01:14:42,888 WARN L193 SmtUtils]: Spent 11.75 s on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-11-30 01:14:57,945 WARN L193 SmtUtils]: Spent 15.06 s on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-11-30 01:15:13,037 WARN L193 SmtUtils]: Spent 15.09 s on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-11-30 01:15:38,309 WARN L193 SmtUtils]: Spent 25.27 s on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,313 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:15:38,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:15:38,314 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,314 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,314 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)))) [2020-11-30 01:15:38,314 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,314 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)))) [2020-11-30 01:15:38,314 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:15:38,314 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,315 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)))) [2020-11-30 01:15:38,315 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,315 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))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 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)))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:15:38,315 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,315 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (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))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 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)))))) [2020-11-30 01:15:38,315 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:15:38,315 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 01:15:38,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:15:38,315 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L270 CegarLoopResult]: At program point L30-2(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 (= 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))))) [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 01:15:38,316 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:15:38,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:15:38 BoogieIcfgContainer [2020-11-30 01:15:38,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:15:38,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:15:38,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:15:38,355 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:15:38,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:19" (3/4) ... [2020-11-30 01:15:38,360 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:15:38,375 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 01:15:38,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:15:38,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:15:38,376 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:15:38,428 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee73fb0a-1abb-4c2b-8820-3039470ec851/bin/uautomizer/witness.graphml [2020-11-30 01:15:38,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:15:38,429 INFO L168 Benchmark]: Toolchain (without parser) took 200322.27 ms. Allocated memory was 75.5 MB in the beginning and 134.2 MB in the end (delta: 58.7 MB). Free memory was 44.5 MB in the beginning and 104.8 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:38,430 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 75.5 MB. Free memory was 46.4 MB in the beginning and 46.4 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:38,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.39 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.3 MB in the beginning and 70.1 MB in the end (delta: -25.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:38,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.14 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:38,432 INFO L168 Benchmark]: Boogie Preprocessor took 62.69 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 67.4 MB in the end (delta: 980.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:38,433 INFO L168 Benchmark]: RCFGBuilder took 961.19 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 53.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:38,434 INFO L168 Benchmark]: TraceAbstraction took 198753.44 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 53.0 MB in the beginning and 107.9 MB in the end (delta: -54.9 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:38,434 INFO L168 Benchmark]: Witness Printer took 73.80 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:38,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 75.5 MB. Free memory was 46.4 MB in the beginning and 46.4 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.39 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.3 MB in the beginning and 70.1 MB in the end (delta: -25.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.14 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.69 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 67.4 MB in the end (delta: 980.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 961.19 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 53.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 198753.44 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 53.0 MB in the beginning and 107.9 MB in the end (delta: -54.9 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. * Witness Printer took 73.80 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 104.8 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: ((((!(0 == cond) && a == 1) && 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)) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 20]: 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: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((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: 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) - 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, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 101.7s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 67.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 96.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 219 SDslu, 430 SDs, 0 SdLazy, 600 SolverSat, 122 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 26.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 61.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 441 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2635 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 182 FormulaSimplificationTreeSizeReductionInter, 96.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 30.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 24121 SizeOfPredicates, 56 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 77/117 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...