./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0036602275d14d2f63e3aedc245d67d50c1210f9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:31:32,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:31:32,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:31:32,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:31:32,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:31:32,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:31:32,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:31:32,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:31:32,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:31:32,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:31:32,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:31:32,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:31:32,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:31:32,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:31:32,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:31:32,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:31:32,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:31:32,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:31:32,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:31:32,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:31:32,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:31:32,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:31:32,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:31:32,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:31:32,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:31:32,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:31:32,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:31:32,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:31:32,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:31:32,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:31:32,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:31:32,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:31:32,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:31:32,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:31:32,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:31:32,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:31:32,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:31:32,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:31:32,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:31:32,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:31:32,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:31:32,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:31:32,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:31:32,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:31:32,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:31:32,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:31:32,511 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:31:32,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:31:32,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:31:32,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:31:32,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:31:32,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:31:32,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:31:32,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:31:32,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:31:32,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:31:32,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:31:32,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:31:32,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:31:32,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:31:32,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:31:32,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:31:32,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:31:32,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:31:32,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:31:32,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:31:32,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:31:32,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:31:32,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:31:32,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:31:32,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:31:32,516 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_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2020-11-29 23:31:32,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:31:32,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:31:32,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:31:32,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:31:32,822 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:31:32,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-11-29 23:31:32,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/data/511bf04f3/c50fc20846ae4a5ebc4ab511cb5fd3e7/FLAG89098bb38 [2020-11-29 23:31:33,390 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:31:33,390 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-11-29 23:31:33,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/data/511bf04f3/c50fc20846ae4a5ebc4ab511cb5fd3e7/FLAG89098bb38 [2020-11-29 23:31:33,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/data/511bf04f3/c50fc20846ae4a5ebc4ab511cb5fd3e7 [2020-11-29 23:31:33,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:31:33,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:31:33,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:31:33,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:31:33,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:31:33,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:31:33" (1/1) ... [2020-11-29 23:31:33,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b93476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:33, skipping insertion in model container [2020-11-29 23:31:33,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:31:33" (1/1) ... [2020-11-29 23:31:33,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:31:33,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:31:33,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:31:34,006 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:31:34,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:31:34,045 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:31:34,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34 WrapperNode [2020-11-29 23:31:34,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:31:34,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:31:34,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:31:34,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:31:34,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:31:34,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:31:34,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:31:34,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:31:34,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... [2020-11-29 23:31:34,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:31:34,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:31:34,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:31:34,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:31:34,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:31:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:31:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:31:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:31:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:31:34,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:31:34,489 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 23:31:34,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:34 BoogieIcfgContainer [2020-11-29 23:31:34,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:31:34,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:31:34,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:31:34,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:31:34,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:31:33" (1/3) ... [2020-11-29 23:31:34,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043fb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:34, skipping insertion in model container [2020-11-29 23:31:34,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:31:34" (2/3) ... [2020-11-29 23:31:34,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043fb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:34, skipping insertion in model container [2020-11-29 23:31:34,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:34" (3/3) ... [2020-11-29 23:31:34,503 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-11-29 23:31:34,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:31:34,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 23:31:34,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 23:31:34,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:31:34,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:31:34,574 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:31:34,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:31:34,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:31:34,575 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:31:34,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:31:34,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:31:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 23:31:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:31:34,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:34,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:31:34,596 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 23:31:34,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:34,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364356147] [2020-11-29 23:31:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:34,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364356147] [2020-11-29 23:31:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:34,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:31:34,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576206714] [2020-11-29 23:31:34,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:31:34,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:31:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:31:34,859 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 23:31:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:34,881 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 23:31:34,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:31:34,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 23:31:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:34,894 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:31:34,894 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:31:34,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:31:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:31:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 23:31:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 23:31:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 23:31:34,950 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 23:31:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:34,951 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 23:31:34,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:31:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 23:31:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:31:34,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:34,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:31:34,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:31:34,954 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:34,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 23:31:34,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:34,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378806445] [2020-11-29 23:31:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:35,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378806445] [2020-11-29 23:31:35,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:35,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:31:35,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446662155] [2020-11-29 23:31:35,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:35,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:35,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:35,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:35,090 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-29 23:31:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:35,272 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-29 23:31:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:31:35,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 23:31:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:35,274 INFO L225 Difference]: With dead ends: 55 [2020-11-29 23:31:35,274 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 23:31:35,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 23:31:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-11-29 23:31:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 23:31:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-29 23:31:35,287 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-11-29 23:31:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:35,287 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-29 23:31:35,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-29 23:31:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:31:35,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:35,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:35,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:31:35,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:35,294 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 23:31:35,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:35,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076089085] [2020-11-29 23:31:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:35,320 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:35,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914554938] [2020-11-29 23:31:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:35,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:31:35,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:35,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076089085] [2020-11-29 23:31:35,453 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914554938] [2020-11-29 23:31:35,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:35,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:31:35,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904182000] [2020-11-29 23:31:35,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:35,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:35,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:35,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:35,456 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-11-29 23:31:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:35,582 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 23:31:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:31:35,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 23:31:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:35,585 INFO L225 Difference]: With dead ends: 50 [2020-11-29 23:31:35,585 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 23:31:35,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 23:31:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 23:31:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 23:31:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 23:31:35,602 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 23:31:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:35,602 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 23:31:35,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 23:31:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:31:35,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:35,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:35,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 23:31:35,804 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:35,805 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 23:31:35,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:35,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379732328] [2020-11-29 23:31:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:35,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:35,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154532579] [2020-11-29 23:31:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:35,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:31:35,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:35,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379732328] [2020-11-29 23:31:35,929 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:35,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154532579] [2020-11-29 23:31:35,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:35,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:31:35,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336393997] [2020-11-29 23:31:35,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:35,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:35,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:35,932 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 23:31:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:36,036 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-11-29 23:31:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:31:36,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:31:36,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:36,037 INFO L225 Difference]: With dead ends: 50 [2020-11-29 23:31:36,037 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:31:36,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:31:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-29 23:31:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:31:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-29 23:31:36,046 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-11-29 23:31:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:36,046 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-29 23:31:36,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-29 23:31:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:31:36,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:36,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:36,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:36,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:36,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2079810332, now seen corresponding path program 1 times [2020-11-29 23:31:36,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:36,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683915315] [2020-11-29 23:31:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:36,275 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:36,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620262887] [2020-11-29 23:31:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:31:36,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:36,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683915315] [2020-11-29 23:31:36,386 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:36,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620262887] [2020-11-29 23:31:36,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:36,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:31:36,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721716631] [2020-11-29 23:31:36,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:31:36,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:36,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:31:36,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:36,388 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-11-29 23:31:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:36,539 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 23:31:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:31:36,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 23:31:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:36,541 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:31:36,541 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 23:31:36,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:31:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 23:31:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-11-29 23:31:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 23:31:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 23:31:36,549 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-29 23:31:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:36,549 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 23:31:36,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:31:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 23:31:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:31:36,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:36,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:36,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:36,774 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1538122751, now seen corresponding path program 1 times [2020-11-29 23:31:36,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:36,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806573617] [2020-11-29 23:31:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:36,787 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:36,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487611222] [2020-11-29 23:31:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:36,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:31:36,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:36,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806573617] [2020-11-29 23:31:36,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:36,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487611222] [2020-11-29 23:31:36,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:36,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:31:36,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762827267] [2020-11-29 23:31:36,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:31:36,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:31:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:36,885 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 23:31:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:37,009 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-11-29 23:31:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:31:37,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 23:31:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:37,010 INFO L225 Difference]: With dead ends: 59 [2020-11-29 23:31:37,011 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 23:31:37,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:31:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 23:31:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-29 23:31:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 23:31:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 23:31:37,027 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-11-29 23:31:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:37,028 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 23:31:37,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:31:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 23:31:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:31:37,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:37,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:37,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:37,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 23:31:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:37,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716569670] [2020-11-29 23:31:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:37,266 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:37,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665828840] [2020-11-29 23:31:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:37,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:31:37,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:37,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716569670] [2020-11-29 23:31:37,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:37,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665828840] [2020-11-29 23:31:37,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:37,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:31:37,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956604613] [2020-11-29 23:31:37,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:31:37,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:37,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:31:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:37,413 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 23:31:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:37,511 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-29 23:31:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:31:37,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 23:31:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:37,512 INFO L225 Difference]: With dead ends: 57 [2020-11-29 23:31:37,512 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:31:37,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:31:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:31:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 23:31:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 23:31:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 23:31:37,519 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 18 [2020-11-29 23:31:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:37,519 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 23:31:37,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:31:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 23:31:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:31:37,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:37,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 23:31:37,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 23:31:37,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:37,721 INFO L82 PathProgramCache]: Analyzing trace with hash 789154926, now seen corresponding path program 2 times [2020-11-29 23:31:37,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:37,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079642071] [2020-11-29 23:31:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:37,732 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:37,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079776198] [2020-11-29 23:31:37,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:37,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:31:37,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:31:37,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:31:37,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:37,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079642071] [2020-11-29 23:31:37,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:37,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079776198] [2020-11-29 23:31:37,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:37,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:31:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727087484] [2020-11-29 23:31:37,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:31:37,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:31:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:31:37,846 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-11-29 23:31:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:37,877 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-11-29 23:31:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:31:37,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 23:31:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:37,879 INFO L225 Difference]: With dead ends: 58 [2020-11-29 23:31:37,879 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 23:31:37,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:31:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 23:31:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-29 23:31:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 23:31:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2020-11-29 23:31:37,884 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 22 [2020-11-29 23:31:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:37,885 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2020-11-29 23:31:37,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:31:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-11-29 23:31:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 23:31:37,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:37,886 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:38,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:38,098 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1306019888, now seen corresponding path program 1 times [2020-11-29 23:31:38,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:38,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81668577] [2020-11-29 23:31:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:38,119 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499508650] [2020-11-29 23:31:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:31:38,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:38,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81668577] [2020-11-29 23:31:38,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499508650] [2020-11-29 23:31:38,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:38,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:31:38,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196856309] [2020-11-29 23:31:38,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:31:38,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:38,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:31:38,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:31:38,256 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 6 states. [2020-11-29 23:31:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:38,378 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-11-29 23:31:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:31:38,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 23:31:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:38,379 INFO L225 Difference]: With dead ends: 32 [2020-11-29 23:31:38,379 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 23:31:38,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:31:38,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 23:31:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 23:31:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 23:31:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2020-11-29 23:31:38,385 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 23 [2020-11-29 23:31:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:38,385 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2020-11-29 23:31:38,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:31:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2020-11-29 23:31:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:31:38,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:38,386 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:38,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:38,587 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:38,588 INFO L82 PathProgramCache]: Analyzing trace with hash -954474189, now seen corresponding path program 1 times [2020-11-29 23:31:38,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:38,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727549332] [2020-11-29 23:31:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:38,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:38,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815597808] [2020-11-29 23:31:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:38,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 23:31:38,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:38,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727549332] [2020-11-29 23:31:38,743 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:38,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815597808] [2020-11-29 23:31:38,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:38,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:31:38,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871261006] [2020-11-29 23:31:38,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:31:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:31:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:31:38,745 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand 6 states. [2020-11-29 23:31:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:38,869 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-11-29 23:31:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:31:38,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 23:31:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:38,871 INFO L225 Difference]: With dead ends: 30 [2020-11-29 23:31:38,871 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:31:38,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:31:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:31:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 23:31:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 23:31:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-11-29 23:31:38,876 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2020-11-29 23:31:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:38,876 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-11-29 23:31:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:31:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-11-29 23:31:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:31:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:38,877 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:39,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 23:31:39,078 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:39,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1873493846, now seen corresponding path program 1 times [2020-11-29 23:31:39,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:39,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828369712] [2020-11-29 23:31:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:39,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:39,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037666571] [2020-11-29 23:31:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:39,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:31:39,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:39,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828369712] [2020-11-29 23:31:39,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:39,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037666571] [2020-11-29 23:31:39,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:31:39,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:31:39,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777833924] [2020-11-29 23:31:39,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:31:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:39,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:31:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:31:39,229 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 6 states. [2020-11-29 23:31:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:39,351 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-11-29 23:31:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:31:39,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 23:31:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:39,352 INFO L225 Difference]: With dead ends: 28 [2020-11-29 23:31:39,352 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:31:39,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:31:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:31:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:31:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:31:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:31:39,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-11-29 23:31:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:39,353 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:31:39,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:31:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:31:39,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:31:39,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:39,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:31:40,133 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,133 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,133 INFO L277 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-11-29 23:31:40,133 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:31:40,133 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-29 23:31:40,134 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,134 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-29 23:31:40,135 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,135 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (<= 2 ~counter~0)) (and (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-29 23:31:40,135 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,135 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)) (and (= ULTIMATE.start_main_~a~0 2) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 5) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 9)))) [2020-11-29 23:31:40,135 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,135 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))) (and (= ULTIMATE.start_main_~a~0 2) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 5) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 9)))) [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,136 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:40,137 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-29 23:31:40,137 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and (= ULTIMATE.start_main_~a~0 2) .cse0 (= ULTIMATE.start_main_~t~0 5) (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 9)))) [2020-11-29 23:31:40,137 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-29 23:31:40,137 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:40,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:31:40 BoogieIcfgContainer [2020-11-29 23:31:40,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:31:40,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:31:40,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:31:40,185 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:31:40,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:34" (3/4) ... [2020-11-29 23:31:40,189 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:31:40,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 23:31:40,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:31:40,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:31:40,216 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:31:40,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1f6d1b3-cf51-47ff-9783-4cd3dacdb03c/bin/uautomizer/witness.graphml [2020-11-29 23:31:40,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:31:40,279 INFO L168 Benchmark]: Toolchain (without parser) took 6503.32 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 79.1 MB in the beginning and 107.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,280 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:40,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.90 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 87.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.16 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,281 INFO L168 Benchmark]: Boogie Preprocessor took 23.52 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:40,281 INFO L168 Benchmark]: RCFGBuilder took 384.30 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 70.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,282 INFO L168 Benchmark]: TraceAbstraction took 5691.54 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 36.4 MB in the end (delta: 33.4 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,282 INFO L168 Benchmark]: Witness Printer took 92.58 ms. Allocated memory is still 132.1 MB. Free memory was 36.4 MB in the beginning and 107.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:40,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 38.0 MB in the beginning and 38.0 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.90 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 87.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.16 ms. Allocated memory is still 109.1 MB. Free memory was 86.6 MB in the beginning and 85.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.52 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 384.30 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 70.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5691.54 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 69.8 MB in the beginning and 36.4 MB in the end (delta: 33.4 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. * Witness Printer took 92.58 ms. Allocated memory is still 132.1 MB. Free memory was 36.4 MB in the beginning and 107.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 2.1 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)) || ((((a == 2 && 1 <= cond) && t == 5) && 2 <= counter) && s == 9) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 <= cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 <= cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((s == 1 && a == 0) && t == 1) && 0 <= counter) || ((((1 <= counter && a == 1) && 1 <= cond) && t == 3) && s == t + 1)) || ((((a == 2 && 1 <= cond) && t == 5) && 2 <= counter) && s == 9) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 <= cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 <= cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || ((((a == 2 && 1 <= cond) && t == 5) && 2 <= counter) && s == 9) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((a == 1 && 1 <= cond) && t == 3) && s == t + 1) && 2 <= counter) || ((((1 <= counter && 1 <= cond) && s == 1) && a == 0) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 169 SDslu, 357 SDs, 0 SdLazy, 459 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, 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, 11 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 243 HoareAnnotationTreeSize, 8 FomulaSimplifications, 675 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 20383 SizeOfPredicates, 36 NumberOfNonLiveVariables, 837 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 12/65 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...