./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound50.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_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 4564eb416289e9a7ffc515b1b5d6a03a62cf5822 .................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:43,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:43,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:43,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:43,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:43,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:43,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:43,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:43,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:43,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:43,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:43,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:43,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:43,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:43,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:43,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:43,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:43,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:43,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:43,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:43,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:43,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:43,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:43,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:43,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:43,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:43,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:43,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:43,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:43,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:43,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:43,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:43,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:43,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:43,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:43,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:43,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:43,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:43,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:43,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:43,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:43,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:43,422 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:43,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:43,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:43,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:43,424 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:43,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:43,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:43,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:43,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:43,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:43,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:43,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:43,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:43,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:43,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:43,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:43,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:43,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:43,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:43,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:43,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:43,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:43,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:43,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:43,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:43,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:43,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:43,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:43,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:43,431 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_48511235-5584-441b-818c-f77dd9ae9ec5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4564eb416289e9a7ffc515b1b5d6a03a62cf5822 [2020-11-28 03:20:43,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:43,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:43,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:43,717 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:43,718 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:43,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound50.c [2020-11-28 03:20:43,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/data/734c711aa/d920f59756384cc882d2c77500fa969b/FLAG41ab97f22 [2020-11-28 03:20:44,281 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:44,282 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound50.c [2020-11-28 03:20:44,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/data/734c711aa/d920f59756384cc882d2c77500fa969b/FLAG41ab97f22 [2020-11-28 03:20:44,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/data/734c711aa/d920f59756384cc882d2c77500fa969b [2020-11-28 03:20:44,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:44,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:44,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:44,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:44,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:44,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:44,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633f7315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44, skipping insertion in model container [2020-11-28 03:20:44,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:44,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:44,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:44,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:44,968 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:44,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:44,999 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:44,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44 WrapperNode [2020-11-28 03:20:45,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:45,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:45,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:45,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:45,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:45,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:45,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:45,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:45,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... [2020-11-28 03:20:45,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:45,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:45,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:45,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:45,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 03:20:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:45,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:45,398 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:45,398 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 03:20:45,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:45 BoogieIcfgContainer [2020-11-28 03:20:45,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:45,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:45,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:45,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:45,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:44" (1/3) ... [2020-11-28 03:20:45,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447455bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:45, skipping insertion in model container [2020-11-28 03:20:45,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:44" (2/3) ... [2020-11-28 03:20:45,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447455bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:45, skipping insertion in model container [2020-11-28 03:20:45,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:45" (3/3) ... [2020-11-28 03:20:45,424 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound50.c [2020-11-28 03:20:45,447 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:45,451 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:20:45,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:20:45,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:45,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:45,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:45,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:45,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:45,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:45,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:45,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-28 03:20:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:20:45,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:45,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:20:45,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:45,513 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-28 03:20:45,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:45,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453183318] [2020-11-28 03:20:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:45,682 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:20:45,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682600342] [2020-11-28 03:20:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 03:20:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:45,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:45,917 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 03:20:45,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453183318] [2020-11-28 03:20:45,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:20:45,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682600342] [2020-11-28 03:20:45,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:45,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:45,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514883796] [2020-11-28 03:20:45,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:45,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:45,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:45,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:45,950 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-28 03:20:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:46,053 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-28 03:20:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:46,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:20:46,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:46,064 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:20:46,064 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:20:46,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:20:46,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-11-28 03:20:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:20:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 03:20:46,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-11-28 03:20:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:46,103 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 03:20:46,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 03:20:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:20:46,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:46,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:46,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 03:20:46,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-28 03:20:46,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:46,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823579591] [2020-11-28 03:20:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:46,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:20:46,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992052912] [2020-11-28 03:20:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 03:20:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:46,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:20:46,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:46,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823579591] [2020-11-28 03:20:46,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:20:46,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992052912] [2020-11-28 03:20:46,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:20:46,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:20:46,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972104010] [2020-11-28 03:20:46,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:46,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:46,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:46,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:46,484 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-11-28 03:20:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:46,614 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-28 03:20:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:46,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:20:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:46,617 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:20:46,617 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:20:46,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:20:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:20:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-28 03:20:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:20:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-28 03:20:46,624 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-28 03:20:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:46,624 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-28 03:20:46,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-28 03:20:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:20:46,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:46,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-11-28 03:20:46,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:46,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:46,827 INFO L82 PathProgramCache]: Analyzing trace with hash 542015330, now seen corresponding path program 2 times [2020-11-28 03:20:46,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:46,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073387802] [2020-11-28 03:20:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:46,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:20:46,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818646110] [2020-11-28 03:20:46,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 03:20:46,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:20:46,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:46,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:20:46,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:47,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073387802] [2020-11-28 03:20:47,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:20:47,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818646110] [2020-11-28 03:20:47,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:20:47,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:20:47,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177225023] [2020-11-28 03:20:47,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:20:47,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:47,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:20:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:47,026 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-11-28 03:20:47,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:47,181 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-28 03:20:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:47,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:20:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:47,183 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:20:47,183 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:20:47,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:20:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:20:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-28 03:20:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:20:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-28 03:20:47,190 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2020-11-28 03:20:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:47,190 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-28 03:20:47,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:20:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-28 03:20:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:20:47,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:47,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-11-28 03:20:47,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:47,418 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1463251502, now seen corresponding path program 3 times [2020-11-28 03:20:47,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:47,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378320709] [2020-11-28 03:20:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:47,439 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:20:47,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570733138] [2020-11-28 03:20:47,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/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 03:20:47,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:20:47,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:20:47,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:20:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:47,554 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:20:47,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:20:47,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:20:47,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:20:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 03:20:47,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378320709] [2020-11-28 03:20:47,622 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:20:47,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570733138] [2020-11-28 03:20:47,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:20:47,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:20:47,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239465335] [2020-11-28 03:20:47,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:47,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:47,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:47,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:47,624 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-11-28 03:20:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:47,703 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-28 03:20:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:47,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:20:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:47,704 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:20:47,704 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:20:47,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:20:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:20:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:20:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:20:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:20:47,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:20:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:47,706 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:20:47,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:20:47,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:20:47,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:47,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:20:48,036 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:20:48,036 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-11-28 03:20:48,036 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:20:48,037 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-28 03:20:48,038 INFO L270 CegarLoopResult]: At program point L10-1(lines 30 31) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 2) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0))) [2020-11-28 03:20:48,038 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-28 03:20:48,038 INFO L277 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: true [2020-11-28 03:20:48,038 INFO L277 CegarLoopResult]: At program point L39(lines 18 40) the Hoare annotation is: true [2020-11-28 03:20:48,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:48 BoogieIcfgContainer [2020-11-28 03:20:48,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:48,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:48,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:48,063 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:48,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:45" (3/4) ... [2020-11-28 03:20:48,068 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:20:48,079 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:20:48,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:20:48,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:48,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:48,128 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48511235-5584-441b-818c-f77dd9ae9ec5/bin/uautomizer/witness.graphml [2020-11-28 03:20:48,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:48,132 INFO L168 Benchmark]: Toolchain (without parser) took 3477.10 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 63.5 MB in the beginning and 48.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,133 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:48,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.85 ms. Allocated memory is still 92.3 MB. Free memory was 63.3 MB in the beginning and 68.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.48 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,140 INFO L168 Benchmark]: Boogie Preprocessor took 20.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 66.4 MB in the end (delta: 963.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:48,140 INFO L168 Benchmark]: RCFGBuilder took 343.93 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 55.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,141 INFO L168 Benchmark]: TraceAbstraction took 2660.75 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 54.5 MB in the beginning and 51.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,141 INFO L168 Benchmark]: Witness Printer took 67.05 ms. Allocated memory is still 125.8 MB. Free memory was 51.7 MB in the beginning and 48.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:48,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.85 ms. Allocated memory is still 92.3 MB. Free memory was 63.3 MB in the beginning and 68.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.48 ms. Allocated memory is still 92.3 MB. Free memory was 68.9 MB in the beginning and 67.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.4 MB in the beginning and 66.4 MB in the end (delta: 963.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 343.93 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 55.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2660.75 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 54.5 MB in the beginning and 51.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.05 ms. Allocated memory is still 125.8 MB. Free memory was 51.7 MB in the beginning and 48.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (y == 0 && x * 2 == y * y + y) || (1 == cond && x * 2 == y * y + y) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 == cond && x * 2 == y * y + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 50 SDslu, 90 SDs, 0 SdLazy, 83 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 42 HoareAnnotationTreeSize, 4 FomulaSimplifications, 121 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2735 SizeOfPredicates, 18 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 20/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...