./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/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 e095661a00784e6d7da38858d8505be229f1ade1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-29 22:46:26,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:46:26,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:46:26,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:46:26,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:46:26,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:46:26,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:46:26,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:46:26,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:46:26,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:46:26,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:46:26,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:46:26,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:46:26,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:46:26,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:46:26,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:46:26,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:46:26,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:46:26,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:46:26,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:46:26,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:46:26,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:46:26,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:46:26,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:46:26,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:46:26,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:46:26,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:46:26,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:46:26,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:46:26,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:46:26,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:46:26,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:46:26,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:46:26,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:46:26,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:46:26,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:46:26,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:46:26,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:46:26,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:46:26,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:46:26,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:46:26,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:46:26,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:46:26,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:46:26,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:46:26,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:46:26,330 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:46:26,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:46:26,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:46:26,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:46:26,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:46:26,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:46:26,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:46:26,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:46:26,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:46:26,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:46:26,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:46:26,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:46:26,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:46:26,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:46:26,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:46:26,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:46:26,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:46:26,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:46:26,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:46:26,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:46:26,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:46:26,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:46:26,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:46:26,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:46:26,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:46:26,337 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_2d329f19-37ac-4276-90af-7e3f9b98f0de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095661a00784e6d7da38858d8505be229f1ade1 [2020-11-29 22:46:26,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:46:26,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:46:26,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:46:26,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:46:26,600 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:46:26,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c [2020-11-29 22:46:26,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/data/f7d165a68/b32b3a9a76b4483ba1780e69e4d5ef40/FLAGbd2cac378 [2020-11-29 22:46:27,093 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:46:27,093 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound2.c [2020-11-29 22:46:27,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/data/f7d165a68/b32b3a9a76b4483ba1780e69e4d5ef40/FLAGbd2cac378 [2020-11-29 22:46:27,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/data/f7d165a68/b32b3a9a76b4483ba1780e69e4d5ef40 [2020-11-29 22:46:27,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:46:27,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:46:27,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:46:27,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:46:27,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:46:27,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc282ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27, skipping insertion in model container [2020-11-29 22:46:27,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:46:27,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:46:27,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:46:27,748 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:46:27,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:46:27,779 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:46:27,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27 WrapperNode [2020-11-29 22:46:27,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:46:27,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:46:27,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:46:27,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:46:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:46:27,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:46:27,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:46:27,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:46:27,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... [2020-11-29 22:46:27,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:46:27,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:46:27,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:46:27,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:46:27,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:46:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:46:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:46:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:46:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:46:28,219 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:46:28,219 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-29 22:46:28,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:46:28 BoogieIcfgContainer [2020-11-29 22:46:28,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:46:28,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:46:28,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:46:28,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:46:28,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:46:27" (1/3) ... [2020-11-29 22:46:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be51090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:46:28, skipping insertion in model container [2020-11-29 22:46:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:46:27" (2/3) ... [2020-11-29 22:46:28,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be51090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:46:28, skipping insertion in model container [2020-11-29 22:46:28,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:46:28" (3/3) ... [2020-11-29 22:46:28,229 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound2.c [2020-11-29 22:46:28,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:46:28,245 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 22:46:28,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 22:46:28,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:46:28,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:46:28,306 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:46:28,306 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:46:28,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:46:28,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:46:28,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:46:28,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:46:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 22:46:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:46:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:28,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:46:28,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:28,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:28,347 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 22:46:28,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:28,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968373311] [2020-11-29 22:46:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:28,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968373311] [2020-11-29 22:46:28,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:46:28,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:46:28,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863981029] [2020-11-29 22:46:28,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:46:28,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:46:28,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:28,682 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-11-29 22:46:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:28,851 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-11-29 22:46:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:46:28,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 22:46:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:28,862 INFO L225 Difference]: With dead ends: 102 [2020-11-29 22:46:28,862 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 22:46:28,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 22:46:28,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-11-29 22:46:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 22:46:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-29 22:46:28,912 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-11-29 22:46:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:28,912 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-29 22:46:28,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:46:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-29 22:46:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:46:28,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:28,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:28,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:46:28,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash 179013485, now seen corresponding path program 1 times [2020-11-29 22:46:28,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:28,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762421997] [2020-11-29 22:46:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:28,950 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:28,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808731381] [2020-11-29 22:46:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:29,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 22:46:29,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:46:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:29,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762421997] [2020-11-29 22:46:29,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:46:29,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808731381] [2020-11-29 22:46:29,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:46:29,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:46:29,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732848689] [2020-11-29 22:46:29,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:46:29,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:29,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:46:29,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:29,070 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-29 22:46:29,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:29,092 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-29 22:46:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:46:29,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:46:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:29,097 INFO L225 Difference]: With dead ends: 54 [2020-11-29 22:46:29,097 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 22:46:29,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 22:46:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 22:46:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 22:46:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 22:46:29,111 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-29 22:46:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:29,112 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 22:46:29,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:46:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 22:46:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:46:29,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:29,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:29,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 22:46:29,325 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:29,326 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 22:46:29,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:29,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024009295] [2020-11-29 22:46:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:29,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024009295] [2020-11-29 22:46:29,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:46:29,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:46:29,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339817600] [2020-11-29 22:46:29,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:46:29,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:29,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:46:29,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:29,393 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 22:46:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:29,500 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-29 22:46:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:46:29,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 22:46:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:29,502 INFO L225 Difference]: With dead ends: 54 [2020-11-29 22:46:29,502 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 22:46:29,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 22:46:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-29 22:46:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 22:46:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-29 22:46:29,525 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-11-29 22:46:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:29,525 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-29 22:46:29,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:46:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-29 22:46:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:46:29,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:29,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:29,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 22:46:29,527 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 22:46:29,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:29,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413633752] [2020-11-29 22:46:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:29,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:29,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648894373] [2020-11-29 22:46:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:46:29,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:46:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:29,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413633752] [2020-11-29 22:46:29,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:46:29,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648894373] [2020-11-29 22:46:29,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:46:29,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:46:29,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680898258] [2020-11-29 22:46:29,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:46:29,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:29,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:46:29,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:29,639 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-29 22:46:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:29,759 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-11-29 22:46:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:46:29,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 22:46:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:29,763 INFO L225 Difference]: With dead ends: 79 [2020-11-29 22:46:29,763 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 22:46:29,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 22:46:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-11-29 22:46:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 22:46:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-29 22:46:29,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-11-29 22:46:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:29,774 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-29 22:46:29,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:46:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-29 22:46:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:46:29,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:29,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:29,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:29,997 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:29,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2079564058, now seen corresponding path program 1 times [2020-11-29 22:46:29,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:29,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747941808] [2020-11-29 22:46:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:30,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:30,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909263567] [2020-11-29 22:46:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:30,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:46:30,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:46:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:30,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747941808] [2020-11-29 22:46:30,093 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:46:30,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909263567] [2020-11-29 22:46:30,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:46:30,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:46:30,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572771235] [2020-11-29 22:46:30,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 22:46:30,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:30,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:46:30,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:46:30,095 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2020-11-29 22:46:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:30,189 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-29 22:46:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:46:30,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 22:46:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:30,191 INFO L225 Difference]: With dead ends: 66 [2020-11-29 22:46:30,191 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 22:46:30,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 22:46:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-11-29 22:46:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 22:46:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-11-29 22:46:30,199 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-11-29 22:46:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:30,200 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-11-29 22:46:30,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 22:46:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-11-29 22:46:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:46:30,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:30,201 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:30,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:30,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:30,418 INFO L82 PathProgramCache]: Analyzing trace with hash 18473186, now seen corresponding path program 1 times [2020-11-29 22:46:30,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:30,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88270172] [2020-11-29 22:46:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:30,429 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:30,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583889056] [2020-11-29 22:46:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:30,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:46:30,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:46:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88270172] [2020-11-29 22:46:30,516 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:46:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583889056] [2020-11-29 22:46:30,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:46:30,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 22:46:30,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262466030] [2020-11-29 22:46:30,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:46:30,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:46:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:30,518 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-11-29 22:46:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:30,570 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-11-29 22:46:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:46:30,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 22:46:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:30,572 INFO L225 Difference]: With dead ends: 78 [2020-11-29 22:46:30,572 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 22:46:30,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:46:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 22:46:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 22:46:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 22:46:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-29 22:46:30,580 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-11-29 22:46:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:30,580 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-29 22:46:30,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:46:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-29 22:46:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 22:46:30,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:30,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:30,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:30,810 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 22:46:30,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:30,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148578006] [2020-11-29 22:46:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:30,831 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:30,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012704018] [2020-11-29 22:46:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:46:30,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:46:30,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:46:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:46:30,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148578006] [2020-11-29 22:46:30,948 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 22:46:30,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012704018] [2020-11-29 22:46:30,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:46:30,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 22:46:30,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127746915] [2020-11-29 22:46:30,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:46:30,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:46:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:46:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:46:30,950 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2020-11-29 22:46:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:46:31,150 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2020-11-29 22:46:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:46:31,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 22:46:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:46:31,152 INFO L225 Difference]: With dead ends: 126 [2020-11-29 22:46:31,152 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 22:46:31,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:46:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 22:46:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-11-29 22:46:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 22:46:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-11-29 22:46:31,181 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2020-11-29 22:46:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:46:31,181 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-11-29 22:46:31,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:46:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-11-29 22:46:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:46:31,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:46:31,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:46:31,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 22:46:31,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:46:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:46:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 293037475, now seen corresponding path program 1 times [2020-11-29 22:46:31,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:46:31,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371669639] [2020-11-29 22:46:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:46:31,392 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:46:31,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063565114] [2020-11-29 22:46:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:46:31,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:46:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:46:31,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:46:31,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:46:31,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:46:31,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:46:31,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:46:31 BoogieIcfgContainer [2020-11-29 22:46:31,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:46:31,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:46:31,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:46:31,759 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:46:31,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:46:28" (3/4) ... [2020-11-29 22:46:31,761 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:46:31,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2d329f19-37ac-4276-90af-7e3f9b98f0de/bin/uautomizer/witness.graphml [2020-11-29 22:46:31,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:46:31,813 INFO L168 Benchmark]: Toolchain (without parser) took 4319.40 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.2 MB in the beginning and 73.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:46:31,814 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 51.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:46:31,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.92 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 72.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:46:31,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.33 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:46:31,815 INFO L168 Benchmark]: Boogie Preprocessor took 22.60 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.6 MB in the end (delta: 937.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:46:31,816 INFO L168 Benchmark]: RCFGBuilder took 381.73 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 53.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:46:31,817 INFO L168 Benchmark]: TraceAbstraction took 3535.82 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 75.3 MB in the end (delta: -21.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:46:31,817 INFO L168 Benchmark]: Witness Printer took 52.75 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 73.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:46:31,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory was 51.3 MB in the beginning and 51.2 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.92 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 72.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.33 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 70.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.60 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 69.6 MB in the end (delta: 937.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.73 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 53.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3535.82 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 75.3 MB in the end (delta: -21.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.75 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 73.2 MB in the end (delta: 2.1 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] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND TRUE !(r >= d) VAL [counter=2] [L44] EXPR counter++ VAL [counter=3] [L44] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard2.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 189 SDslu, 328 SDs, 0 SdLazy, 228 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, 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, 7 MinimizatonAttempts, 73 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 5559 SizeOfPredicates, 17 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/9 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...