./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.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_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:07:32,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:07:32,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:07:32,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:07:32,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:07:32,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:07:32,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:07:32,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:07:32,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:07:32,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:07:32,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:07:32,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:07:32,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:07:32,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:07:32,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:07:32,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:07:32,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:07:32,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:07:32,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:07:32,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:07:32,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:07:32,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:07:32,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:07:32,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:07:32,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:07:32,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:07:32,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:07:32,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:07:32,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:07:32,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:07:32,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:07:32,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:07:32,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:07:32,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:07:32,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:07:32,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:07:32,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:07:32,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:07:32,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:07:32,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:07:32,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:07:32,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:07:32,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:07:32,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:07:32,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:07:32,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:07:32,546 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:07:32,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:07:32,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:07:32,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:07:32,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:07:32,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:07:32,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:07:32,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:07:32,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:07:32,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:07:32,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:07:32,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:07:32,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:07:32,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:07:32,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:07:32,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:07:32,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:07:32,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:07:32,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:07:32,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:07:32,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:07:32,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:07:32,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:07:32,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:07:32,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:07:32,556 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_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 [2020-11-30 00:07:32,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:07:33,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:07:33,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:07:33,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:07:33,043 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:07:33,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-30 00:07:33,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/data/708cec908/e653f7a8d0f04b838617d48c328b1132/FLAG392d44ac4 [2020-11-30 00:07:33,771 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:07:33,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-30 00:07:33,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/data/708cec908/e653f7a8d0f04b838617d48c328b1132/FLAG392d44ac4 [2020-11-30 00:07:34,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/data/708cec908/e653f7a8d0f04b838617d48c328b1132 [2020-11-30 00:07:34,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:07:34,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:07:34,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:07:34,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:07:34,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:07:34,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399bd914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34, skipping insertion in model container [2020-11-30 00:07:34,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:07:34,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:07:34,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:07:34,422 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:07:34,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:07:34,502 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:07:34,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34 WrapperNode [2020-11-30 00:07:34,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:07:34,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:07:34,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:07:34,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:07:34,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:07:34,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:07:34,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:07:34,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:07:34,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... [2020-11-30 00:07:34,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:07:34,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:07:34,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:07:34,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:07:34,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:07:34,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:07:34,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:07:34,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:07:35,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:07:35,151 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 00:07:35,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:07:35 BoogieIcfgContainer [2020-11-30 00:07:35,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:07:35,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:07:35,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:07:35,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:07:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:07:34" (1/3) ... [2020-11-30 00:07:35,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616384db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:07:35, skipping insertion in model container [2020-11-30 00:07:35,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:07:34" (2/3) ... [2020-11-30 00:07:35,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616384db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:07:35, skipping insertion in model container [2020-11-30 00:07:35,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:07:35" (3/3) ... [2020-11-30 00:07:35,166 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound2.c [2020-11-30 00:07:35,182 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:07:35,188 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 00:07:35,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:07:35,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:07:35,244 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:07:35,244 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:07:35,245 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:07:35,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:07:35,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:07:35,245 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:07:35,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:07:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:07:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:07:35,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:35,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:35,282 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 00:07:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:35,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 00:07:35,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:35,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509161193] [2020-11-30 00:07:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:07:35,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509161193] [2020-11-30 00:07:35,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:07:35,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:07:35,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943532163] [2020-11-30 00:07:35,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:07:35,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:35,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:07:35,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:07:35,635 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:07:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:35,668 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 00:07:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:07:35,670 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 00:07:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:35,687 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:07:35,687 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:07:35,695 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 00:07:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:07:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:07:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:07:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 00:07:35,797 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 00:07:35,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:35,798 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 00:07:35,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:07:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 00:07:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:07:35,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:35,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:35,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:07:35,801 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 00:07:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 00:07:35,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:35,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489609996] [2020-11-30 00:07:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:36,089 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 00:07:36,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489609996] [2020-11-30 00:07:36,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:07:36,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:07:36,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27982301] [2020-11-30 00:07:36,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:07:36,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:36,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:07:36,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:07:36,095 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-30 00:07:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:36,286 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 00:07:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:07:36,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:07:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:36,290 INFO L225 Difference]: With dead ends: 54 [2020-11-30 00:07:36,290 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 00:07:36,292 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 00:07:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 00:07:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-30 00:07:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 00:07:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-30 00:07:36,306 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-30 00:07:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:36,306 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-30 00:07:36,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:07:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-30 00:07:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:07:36,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:36,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:07:36,309 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 00:07:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 00:07:36,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:36,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615427268] [2020-11-30 00:07:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:36,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:36,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655830876] [2020-11-30 00:07:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:36,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:07:36,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:36,520 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 00:07:36,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615427268] [2020-11-30 00:07:36,521 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:36,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655830876] [2020-11-30 00:07:36,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:07:36,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:07:36,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710395069] [2020-11-30 00:07:36,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:07:36,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:36,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:07:36,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:07:36,524 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-30 00:07:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:36,709 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-30 00:07:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:07:36,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:07:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:36,713 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:07:36,713 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:07:36,714 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 00:07:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:07:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-30 00:07:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 00:07:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-30 00:07:36,740 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-30 00:07:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:36,741 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-30 00:07:36,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:07:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-30 00:07:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:07:36,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:36,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:36,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 00:07:36,973 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 00:07:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:36,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-30 00:07:36,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:36,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609075018] [2020-11-30 00:07:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:36,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:36,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600197605] [2020-11-30 00:07:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:07:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:37,108 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 00:07:37,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609075018] [2020-11-30 00:07:37,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:37,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600197605] [2020-11-30 00:07:37,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:07:37,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:07:37,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007891809] [2020-11-30 00:07:37,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:07:37,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:37,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:07:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:07:37,112 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-30 00:07:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:37,262 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-30 00:07:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:07:37,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:07:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:37,264 INFO L225 Difference]: With dead ends: 47 [2020-11-30 00:07:37,264 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:07:37,265 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 00:07:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:07:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-30 00:07:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:07:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-30 00:07:37,274 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-30 00:07:37,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:37,274 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-30 00:07:37,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:07:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-30 00:07:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:07:37,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:37,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:37,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:07:37,505 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 00:07:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-30 00:07:37,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:37,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458968633] [2020-11-30 00:07:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:37,525 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:37,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958763129] [2020-11-30 00:07:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:37,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:07:37,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:37,648 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 00:07:37,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458968633] [2020-11-30 00:07:37,649 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:37,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958763129] [2020-11-30 00:07:37,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:07:37,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:07:37,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117521988] [2020-11-30 00:07:37,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:07:37,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:37,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:07:37,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:07:37,652 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-30 00:07:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:37,841 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-30 00:07:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:07:37,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:07:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:37,843 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:07:37,843 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:07:37,844 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 00:07:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:07:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-30 00:07:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:07:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 00:07:37,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-30 00:07:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:37,871 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 00:07:37,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:07:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 00:07:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:07:37,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:37,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:07:38,089 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 00:07:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-30 00:07:38,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:38,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440055301] [2020-11-30 00:07:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:38,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:38,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515140660] [2020-11-30 00:07:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:38,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:07:38,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:38,230 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 00:07:38,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440055301] [2020-11-30 00:07:38,230 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:38,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515140660] [2020-11-30 00:07:38,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:07:38,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:07:38,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300401511] [2020-11-30 00:07:38,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:07:38,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:38,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:07:38,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:07:38,233 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-30 00:07:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:38,421 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-30 00:07:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:07:38,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 00:07:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:38,424 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:07:38,424 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 00:07:38,425 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 00:07:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 00:07:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-30 00:07:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 00:07:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-30 00:07:38,447 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-30 00:07:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:38,448 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-30 00:07:38,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:07:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-30 00:07:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:07:38,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:38,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:38,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:07:38,665 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 00:07:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-30 00:07:38,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:38,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74057831] [2020-11-30 00:07:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:38,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:38,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580401520] [2020-11-30 00:07:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:07:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:07:38,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:38,806 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 00:07:38,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74057831] [2020-11-30 00:07:38,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:38,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580401520] [2020-11-30 00:07:38,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:07:38,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:07:38,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239907032] [2020-11-30 00:07:38,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:07:38,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:07:38,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:07:38,808 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-30 00:07:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:38,977 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 00:07:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:07:38,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 00:07:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:38,979 INFO L225 Difference]: With dead ends: 54 [2020-11-30 00:07:38,979 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:07:38,980 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 00:07:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:07:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-30 00:07:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:07:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-30 00:07:38,989 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-30 00:07:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:38,989 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-30 00:07:38,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:07:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-30 00:07:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:07:38,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:38,991 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:39,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 00:07:39,206 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 00:07:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-30 00:07:39,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:39,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534062862] [2020-11-30 00:07:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:39,235 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974313421] [2020-11-30 00:07:39,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:39,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:07:39,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:07:39,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:07:39,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:39,403 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 00:07:39,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534062862] [2020-11-30 00:07:39,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:39,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974313421] [2020-11-30 00:07:39,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:07:39,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:07:39,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770774244] [2020-11-30 00:07:39,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:07:39,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:39,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:07:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:07:39,406 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-30 00:07:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:39,653 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-30 00:07:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:07:39,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-30 00:07:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:39,655 INFO L225 Difference]: With dead ends: 68 [2020-11-30 00:07:39,655 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 00:07:39,656 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 00:07:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 00:07:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-30 00:07:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 00:07:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-30 00:07:39,666 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-30 00:07:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:39,667 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-30 00:07:39,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:07:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-30 00:07:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:07:39,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:07:39,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:07:39,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:07:39,885 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 00:07:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:07:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-30 00:07:39,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:07:39,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664237893] [2020-11-30 00:07:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:07:39,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:07:39,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465009692] [2020-11-30 00:07:39,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/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 00:07:39,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:07:39,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:07:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:07:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:07:40,037 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:07:40,043 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:07:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:07:40,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664237893] [2020-11-30 00:07:40,147 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:07:40,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465009692] [2020-11-30 00:07:40,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:07:40,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:07:40,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115081082] [2020-11-30 00:07:40,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:07:40,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:07:40,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:07:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:07:40,150 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-30 00:07:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:07:40,364 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-30 00:07:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:07:40,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 00:07:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:07:40,366 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:07:40,366 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:07:40,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:07:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:07:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:07:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:07:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:07:40,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-30 00:07:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:07:40,368 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:07:40,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:07:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:07:40,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:07:40,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:07:40,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:07:40,963 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-30 00:07:41,094 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-30 00:07:41,220 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-30 00:07:41,396 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-30 00:07:41,399 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,399 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,399 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,400 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,401 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:07:41,401 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,401 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:07:41,401 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:07:41,401 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,402 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:07:41,402 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,402 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:07:41,402 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,402 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))))) [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:07:41,403 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,403 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,404 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,404 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 00:07:41,404 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,407 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:07:41,408 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse2) (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 00:07:41,408 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 00:07:41,408 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:07:41,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:07:41 BoogieIcfgContainer [2020-11-30 00:07:41,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:07:41,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:07:41,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:07:41,457 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:07:41,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:07:35" (3/4) ... [2020-11-30 00:07:41,462 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:07:41,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:07:41,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:07:41,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:07:41,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:07:41,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42ae97fd-71dc-4f27-a8c2-6687688e9b35/bin/uautomizer/witness.graphml [2020-11-30 00:07:41,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:07:41,536 INFO L168 Benchmark]: Toolchain (without parser) took 7452.93 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 57.8 MB in the beginning and 36.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,537 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory was 63.4 MB in the beginning and 63.4 MB in the end (delta: 19.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:07:41,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.66 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 68.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.06 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,539 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.8 MB in the end (delta: 907.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:07:41,540 INFO L168 Benchmark]: RCFGBuilder took 565.61 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 51.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,552 INFO L168 Benchmark]: TraceAbstraction took 6301.29 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 51.1 MB in the beginning and 39.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,553 INFO L168 Benchmark]: Witness Printer took 78.18 ms. Allocated memory is still 113.2 MB. Free memory was 39.4 MB in the beginning and 36.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:41,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory was 63.4 MB in the beginning and 63.4 MB in the end (delta: 19.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.66 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 68.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.06 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 66.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.65 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.8 MB in the end (delta: 907.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 565.61 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 51.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6301.29 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 51.1 MB in the beginning and 39.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. * Witness Printer took 78.18 ms. Allocated memory is still 113.2 MB. Free memory was 39.4 MB in the beginning and 36.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || (((((n <= 2 && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 128 SDslu, 306 SDs, 0 SdLazy, 389 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 50 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 243 HoareAnnotationTreeSize, 8 FomulaSimplifications, 337 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 11352 SizeOfPredicates, 29 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/38 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...