./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/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 e8dca45da3558d3dd2c7a13c991bbb3b579db8dd ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:25:17,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:25:17,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:25:17,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:25:17,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:25:17,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:25:17,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:25:17,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:25:17,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:25:17,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:25:17,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:25:17,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:25:17,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:25:17,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:25:17,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:25:17,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:25:17,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:25:17,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:25:17,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:25:17,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:25:17,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:25:17,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:25:17,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:25:17,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:25:17,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:25:17,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:25:17,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:25:17,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:25:17,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:25:17,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:25:17,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:25:17,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:25:17,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:25:17,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:25:17,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:25:17,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:25:17,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:25:17,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:25:17,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:25:17,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:25:17,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:25:17,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:25:17,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:25:17,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:25:17,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:25:17,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:25:17,552 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:25:17,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:25:17,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:25:17,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:25:17,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:25:17,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:25:17,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:25:17,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:25:17,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:25:17,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:25:17,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:25:17,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:25:17,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:25:17,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:25:17,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:25:17,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:25:17,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:25:17,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:25:17,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:25:17,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:25:17,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:25:17,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:25:17,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:25:17,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:25:17,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:25:17,561 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_f4a39b9c-6650-4f56-b975-eb7292983301/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8dca45da3558d3dd2c7a13c991bbb3b579db8dd [2020-12-01 15:25:17,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:25:17,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:25:17,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:25:17,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:25:17,977 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:25:17,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-12-01 15:25:18,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/data/f7f0ce4fc/ec88d1847c804bb5a6a6a72557bb83c5/FLAG187925ea1 [2020-12-01 15:25:18,677 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:25:18,678 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound1.c [2020-12-01 15:25:18,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/data/f7f0ce4fc/ec88d1847c804bb5a6a6a72557bb83c5/FLAG187925ea1 [2020-12-01 15:25:19,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/data/f7f0ce4fc/ec88d1847c804bb5a6a6a72557bb83c5 [2020-12-01 15:25:19,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:25:19,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:25:19,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:19,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:25:19,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:25:19,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f29dce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19, skipping insertion in model container [2020-12-01 15:25:19,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:25:19,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:25:19,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:19,312 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:25:19,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:19,363 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:25:19,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19 WrapperNode [2020-12-01 15:25:19,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:19,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:19,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:25:19,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:25:19,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:19,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:25:19,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:25:19,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:25:19,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... [2020-12-01 15:25:19,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:25:19,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:25:19,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:25:19,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:25:19,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:25:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:25:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:25:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:25:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:25:20,165 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:25:20,165 INFO L298 CfgBuilder]: Removed 49 assume(true) statements. [2020-12-01 15:25:20,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:20 BoogieIcfgContainer [2020-12-01 15:25:20,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:25:20,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:25:20,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:25:20,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:25:20,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:25:19" (1/3) ... [2020-12-01 15:25:20,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aaec04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:20, skipping insertion in model container [2020-12-01 15:25:20,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:19" (2/3) ... [2020-12-01 15:25:20,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57aaec04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:20, skipping insertion in model container [2020-12-01 15:25:20,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:20" (3/3) ... [2020-12-01 15:25:20,201 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound1.c [2020-12-01 15:25:20,230 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:25:20,235 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-01 15:25:20,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-01 15:25:20,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:25:20,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:25:20,321 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:25:20,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:25:20,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:25:20,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:25:20,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:25:20,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:25:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-01 15:25:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:25:20,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:20,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:25:20,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-01 15:25:20,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:20,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585673768] [2020-12-01 15:25:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:20,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585673768] [2020-12-01 15:25:20,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:20,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:25:20,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459339439] [2020-12-01 15:25:20,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:20,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:20,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:20,761 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-01 15:25:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:20,938 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-01 15:25:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:25:20,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 15:25:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:20,952 INFO L225 Difference]: With dead ends: 101 [2020-12-01 15:25:20,953 INFO L226 Difference]: Without dead ends: 47 [2020-12-01 15:25:20,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-01 15:25:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-01 15:25:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-01 15:25:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-01 15:25:21,006 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-01 15:25:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:21,006 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-01 15:25:21,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-01 15:25:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:25:21,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:21,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:21,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:25:21,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-12-01 15:25:21,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398285795] [2020-12-01 15:25:21,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:21,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:21,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844959333] [2020-12-01 15:25:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:25:21,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:21,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398285795] [2020-12-01 15:25:21,263 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:21,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844959333] [2020-12-01 15:25:21,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:21,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:25:21,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567445741] [2020-12-01 15:25:21,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:25:21,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:21,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:25:21,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:21,269 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-01 15:25:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:21,581 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-01 15:25:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:21,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-01 15:25:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:21,589 INFO L225 Difference]: With dead ends: 90 [2020-12-01 15:25:21,589 INFO L226 Difference]: Without dead ends: 82 [2020-12-01 15:25:21,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:25:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-01 15:25:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-01 15:25:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 15:25:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-01 15:25:21,625 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-01 15:25:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:21,626 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-01 15:25:21,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:25:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-01 15:25:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:25:21,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:21,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:21,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:25:21,855 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:21,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:21,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1274614383, now seen corresponding path program 1 times [2020-12-01 15:25:21,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:21,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015423080] [2020-12-01 15:25:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015423080] [2020-12-01 15:25:21,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:21,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:25:21,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811177959] [2020-12-01 15:25:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:21,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:21,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:21,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:21,924 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-01 15:25:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:21,978 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-01 15:25:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:25:21,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:25:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:21,980 INFO L225 Difference]: With dead ends: 84 [2020-12-01 15:25:21,981 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 15:25:21,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 15:25:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-01 15:25:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 15:25:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-01 15:25:21,994 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-01 15:25:21,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:21,994 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-01 15:25:21,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-01 15:25:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:25:21,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:21,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:21,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:25:21,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-12-01 15:25:21,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:21,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442976467] [2020-12-01 15:25:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:22,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:22,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727444486] [2020-12-01 15:25:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:22,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:25:22,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:22,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442976467] [2020-12-01 15:25:22,186 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:22,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727444486] [2020-12-01 15:25:22,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:22,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:25:22,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691389317] [2020-12-01 15:25:22,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:25:22,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:25:22,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:22,196 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-01 15:25:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:22,387 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-01 15:25:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:25:22,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 15:25:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:22,395 INFO L225 Difference]: With dead ends: 78 [2020-12-01 15:25:22,395 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 15:25:22,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:25:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 15:25:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-01 15:25:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-01 15:25:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-01 15:25:22,418 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-01 15:25:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:22,419 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-01 15:25:22,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:25:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-01 15:25:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:25:22,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:22,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:22,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:22,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:22,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1861377587, now seen corresponding path program 1 times [2020-12-01 15:25:22,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:22,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159124823] [2020-12-01 15:25:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:22,665 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:22,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876179807] [2020-12-01 15:25:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:22,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:25:22,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:22,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159124823] [2020-12-01 15:25:22,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:22,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876179807] [2020-12-01 15:25:22,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:22,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:25:22,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478328950] [2020-12-01 15:25:22,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:25:22,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:25:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:22,875 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-01 15:25:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:23,085 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-01 15:25:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:23,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-01 15:25:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:23,088 INFO L225 Difference]: With dead ends: 77 [2020-12-01 15:25:23,089 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 15:25:23,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:25:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 15:25:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-01 15:25:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-01 15:25:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-01 15:25:23,110 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-01 15:25:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:23,111 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-01 15:25:23,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:25:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-01 15:25:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:25:23,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:23,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:23,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:23,335 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:23,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:23,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1885484539, now seen corresponding path program 1 times [2020-12-01 15:25:23,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:23,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467115286] [2020-12-01 15:25:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:23,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:23,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652645642] [2020-12-01 15:25:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:23,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:25:23,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:23,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467115286] [2020-12-01 15:25:23,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:23,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652645642] [2020-12-01 15:25:23,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:25:23,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 15:25:23,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478947647] [2020-12-01 15:25:23,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:25:23,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:25:23,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:23,554 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 5 states. [2020-12-01 15:25:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:23,593 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-12-01 15:25:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:23,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-01 15:25:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:23,597 INFO L225 Difference]: With dead ends: 80 [2020-12-01 15:25:23,598 INFO L226 Difference]: Without dead ends: 38 [2020-12-01 15:25:23,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-01 15:25:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-01 15:25:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-01 15:25:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-12-01 15:25:23,610 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 20 [2020-12-01 15:25:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:23,611 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-12-01 15:25:23,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:25:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-12-01 15:25:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:25:23,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:23,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:23,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:23,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1678751895, now seen corresponding path program 1 times [2020-12-01 15:25:23,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:23,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294585208] [2020-12-01 15:25:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:23,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:23,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142139093] [2020-12-01 15:25:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:25:23,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:25:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:25:23,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:25:24,053 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:25:24,053 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:25:24,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 15:25:24,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:25:24 BoogieIcfgContainer [2020-12-01 15:25:24,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:25:24,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:25:24,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:25:24,334 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:25:24,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:20" (3/4) ... [2020-12-01 15:25:24,337 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:25:24,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4a39b9c-6650-4f56-b975-eb7292983301/bin/uautomizer/witness.graphml [2020-12-01 15:25:24,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:25:24,459 INFO L168 Benchmark]: Toolchain (without parser) took 5406.40 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 55.6 MB in the beginning and 104.7 MB in the end (delta: -49.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:24,460 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 86.0 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:24,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.09 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 45.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:24,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.75 ms. Allocated memory is still 86.0 MB. Free memory was 45.3 MB in the beginning and 43.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:24,465 INFO L168 Benchmark]: Boogie Preprocessor took 38.52 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:24,465 INFO L168 Benchmark]: RCFGBuilder took 715.39 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 42.1 MB in the beginning and 75.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:24,466 INFO L168 Benchmark]: TraceAbstraction took 4151.38 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.5 MB in the beginning and 107.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:24,467 INFO L168 Benchmark]: Witness Printer took 123.78 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 104.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:24,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 86.0 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.09 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 45.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.75 ms. Allocated memory is still 86.0 MB. Free memory was 45.3 MB in the beginning and 43.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.52 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 715.39 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 42.1 MB in the beginning and 75.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4151.38 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 75.5 MB in the beginning and 107.5 MB in the end (delta: -32.0 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * Witness Printer took 123.78 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 104.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND TRUE !(cond) VAL [counter=2] [L8] __assert_fail("0", "cohencu-ll.c", 8, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 194 SDtfs, 223 SDslu, 296 SDs, 0 SdLazy, 303 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=2, 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, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2975 SizeOfPredicates, 20 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/5 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 incorrect! Received shutdown request...