./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.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_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 418aff548e88686eba696c93dbdd36b46dcf2c98 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 03:19:01,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:01,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:01,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:01,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:01,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:01,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:01,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:01,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:01,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:01,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:01,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:01,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:01,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:01,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:01,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:01,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:01,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:01,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:01,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:01,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:01,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:01,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:01,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:01,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:01,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:01,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:01,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:01,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:01,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:01,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:01,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:01,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:01,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:01,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:01,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:01,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:01,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:01,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:01,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:01,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:01,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:19:01,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:01,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:01,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:01,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:01,627 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:01,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:01,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:01,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:01,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:01,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:01,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:01,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:01,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:01,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:01,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:01,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:01,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:01,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:01,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:01,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:01,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:01,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:01,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:01,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:01,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:01,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:01,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:01,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:01,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:01,632 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_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 418aff548e88686eba696c93dbdd36b46dcf2c98 [2020-11-28 03:19:01,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:01,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:01,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:01,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:01,960 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:01,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2020-11-28 03:19:02,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/data/04437aafe/c2843f395e67475f9ef9a4da073eb9c8/FLAG1161cbcb0 [2020-11-28 03:19:02,580 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:02,581 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2020-11-28 03:19:02,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/data/04437aafe/c2843f395e67475f9ef9a4da073eb9c8/FLAG1161cbcb0 [2020-11-28 03:19:02,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/data/04437aafe/c2843f395e67475f9ef9a4da073eb9c8 [2020-11-28 03:19:02,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:02,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:02,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:02,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:02,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:02,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:02" (1/1) ... [2020-11-28 03:19:02,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ff19f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:02, skipping insertion in model container [2020-11-28 03:19:02,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:02" (1/1) ... [2020-11-28 03:19:02,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:02,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:03,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:03,200 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:03,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:03,238 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:03,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03 WrapperNode [2020-11-28 03:19:03,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:03,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:03,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:03,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:03,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:03,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:03,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:03,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:03,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... [2020-11-28 03:19:03,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:03,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:03,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:03,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:03,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 [2020-11-28 03:19:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:03,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:03,702 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:03,704 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 03:19:03,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:03 BoogieIcfgContainer [2020-11-28 03:19:03,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:03,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:03,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:03,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:03,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:02" (1/3) ... [2020-11-28 03:19:03,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9edba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:03, skipping insertion in model container [2020-11-28 03:19:03,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:03" (2/3) ... [2020-11-28 03:19:03,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9edba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:03, skipping insertion in model container [2020-11-28 03:19:03,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:03" (3/3) ... [2020-11-28 03:19:03,735 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound1.c [2020-11-28 03:19:03,748 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:03,753 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:19:03,765 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:19:03,799 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:03,799 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:03,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:03,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:03,800 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:03,800 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:03,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:03,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 03:19:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:03,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:03,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:03,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1235309937, now seen corresponding path program 1 times [2020-11-28 03:19:03,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:03,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189437922] [2020-11-28 03:19:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:04,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189437922] [2020-11-28 03:19:04,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:04,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:19:04,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422435985] [2020-11-28 03:19:04,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:04,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:04,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:04,052 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 03:19:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:04,084 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-11-28 03:19:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:04,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:19:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:04,095 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:19:04,095 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:19:04,098 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 [2020-11-28 03:19:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:19:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:19:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:19:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-28 03:19:04,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2020-11-28 03:19:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:04,143 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-28 03:19:04,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-28 03:19:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:19:04,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:04,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:04,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:04,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-28 03:19:04,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:04,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444474366] [2020-11-28 03:19:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:04,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:04,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363171777] [2020-11-28 03:19:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 [2020-11-28 03:19:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:04,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:19:04,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:04,372 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:04,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:04,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444474366] [2020-11-28 03:19:04,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:04,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363171777] [2020-11-28 03:19:04,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:04,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:19:04,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683878224] [2020-11-28 03:19:04,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:04,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:04,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:04,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:04,451 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-11-28 03:19:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:04,726 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-11-28 03:19:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:19:04,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:19:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:04,728 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:19:04,728 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:19:04,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:19:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:19:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-11-28 03:19:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:19:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:19:04,738 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-11-28 03:19:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:19:04,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:19:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:04,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:04,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:04,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:19:04,956 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1507423092, now seen corresponding path program 1 times [2020-11-28 03:19:04,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:04,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250843142] [2020-11-28 03:19:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:04,982 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:04,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149102573] [2020-11-28 03:19:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 [2020-11-28 03:19:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:05,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:19:05,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:05,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250843142] [2020-11-28 03:19:05,104 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:05,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149102573] [2020-11-28 03:19:05,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:05,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:19:05,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569440218] [2020-11-28 03:19:05,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:05,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:05,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:05,107 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-11-28 03:19:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:05,130 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 03:19:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:19:05,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:19:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:05,132 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:19:05,132 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:19:05,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:05,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:19:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:19:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:19:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 03:19:05,137 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-11-28 03:19:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:05,137 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:19:05,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 03:19:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:19:05,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:05,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:05,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:05,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:05,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1188504123, now seen corresponding path program 1 times [2020-11-28 03:19:05,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:05,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327469273] [2020-11-28 03:19:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:05,370 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:05,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899806351] [2020-11-28 03:19:05,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 [2020-11-28 03:19:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:05,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:19:05,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:05,445 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:05,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:05,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327469273] [2020-11-28 03:19:05,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:05,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899806351] [2020-11-28 03:19:05,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:05,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:19:05,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439967967] [2020-11-28 03:19:05,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:19:05,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:19:05,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:19:05,527 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-11-28 03:19:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:05,702 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-28 03:19:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:05,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 03:19:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:05,703 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:19:05,703 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:19:05,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:19:05,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:19:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 03:19:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:19:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:19:05,708 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-11-28 03:19:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:05,708 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:19:05,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:19:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:19:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:19:05,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:05,709 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:05,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:05,910 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:05,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1768635143, now seen corresponding path program 1 times [2020-11-28 03:19:05,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:05,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204629673] [2020-11-28 03:19:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:05,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:05,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211589737] [2020-11-28 03:19:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/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 [2020-11-28 03:19:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:05,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:19:05,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:19:06,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:19:06,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:19:06,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:06,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:06 BoogieIcfgContainer [2020-11-28 03:19:06,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:06,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:06,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:06,261 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:06,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:03" (3/4) ... [2020-11-28 03:19:06,263 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:19:06,325 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7ae4f1d9-08ec-456d-80b2-2c3abe28a490/bin/uautomizer/witness.graphml [2020-11-28 03:19:06,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:06,327 INFO L168 Benchmark]: Toolchain (without parser) took 3367.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.0 MB in the beginning and 69.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,328 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:06,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.83 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 71.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.12 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,337 INFO L168 Benchmark]: Boogie Preprocessor took 22.15 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 69.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:06,338 INFO L168 Benchmark]: RCFGBuilder took 418.85 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 56.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,338 INFO L168 Benchmark]: TraceAbstraction took 2541.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 72.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,339 INFO L168 Benchmark]: Witness Printer took 64.65 ms. Allocated memory is still 113.2 MB. Free memory was 72.1 MB in the beginning and 69.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:06,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory is still 54.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.83 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 71.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.12 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.15 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 69.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 418.85 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 56.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2541.34 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.5 MB in the beginning and 72.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 64.65 ms. Allocated memory is still 113.2 MB. Free memory was 72.1 MB in the beginning and 69.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: 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] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<1 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND FALSE !(counter++<1) [L16] COND TRUE !(cond) VAL [counter=2] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 73 SDslu, 73 SDs, 0 SdLazy, 67 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 SizeOfPredicates, 18 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...