./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound10.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_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 83f6bde9e3dd8bd516723dd685d3effff2222d26 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:25:00,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:25:00,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:25:00,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:25:00,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:25:00,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:25:00,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:25:00,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:25:00,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:25:00,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:25:00,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:25:00,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:25:00,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:25:00,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:25:00,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:25:00,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:25:00,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:25:00,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:25:00,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:25:00,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:25:00,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:25:00,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:25:00,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:25:00,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:25:00,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:25:00,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:25:00,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:25:00,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:25:00,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:25:00,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:25:00,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:25:00,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:25:00,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:25:00,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:25:00,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:25:00,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:25:00,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:25:00,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:25:00,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:25:00,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:25:00,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:25:00,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:25:00,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:25:00,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:25:00,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:25:00,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:25:00,885 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:25:00,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:25:00,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:25:00,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:25:00,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:25:00,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:25:00,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:25:00,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:25:00,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:25:00,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:25:00,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:25:00,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:25:00,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:25:00,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:25:00,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:25:00,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:25:00,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:25:00,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:25:00,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:25:00,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:25:00,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:25:00,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:25:00,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:25:00,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:25:00,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:25:00,891 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_29f790a5-b116-4fa7-bbac-54319629ace6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83f6bde9e3dd8bd516723dd685d3effff2222d26 [2020-11-29 19:25:01,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:25:01,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:25:01,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:25:01,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:25:01,225 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:25:01,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound10.c [2020-11-29 19:25:01,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/data/7e0f56900/95529916731f4a58b9fe9130159f70ba/FLAG9115eef36 [2020-11-29 19:25:01,828 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:25:01,828 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound10.c [2020-11-29 19:25:01,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/data/7e0f56900/95529916731f4a58b9fe9130159f70ba/FLAG9115eef36 [2020-11-29 19:25:02,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/data/7e0f56900/95529916731f4a58b9fe9130159f70ba [2020-11-29 19:25:02,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:25:02,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:25:02,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:02,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:25:02,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:25:02,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fbb3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02, skipping insertion in model container [2020-11-29 19:25:02,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:25:02,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:25:02,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:02,404 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:25:02,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:02,437 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:25:02,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02 WrapperNode [2020-11-29 19:25:02,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:02,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:02,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:25:02,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:25:02,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:02,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:25:02,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:25:02,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:25:02,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... [2020-11-29 19:25:02,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:25:02,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:25:02,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:25:02,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:25:02,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:25:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:25:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:25:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:25:02,822 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:25:02,822 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-29 19:25:02,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:02 BoogieIcfgContainer [2020-11-29 19:25:02,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:25:02,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:25:02,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:25:02,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:25:02,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:25:02" (1/3) ... [2020-11-29 19:25:02,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645aa771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:02, skipping insertion in model container [2020-11-29 19:25:02,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:02" (2/3) ... [2020-11-29 19:25:02,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645aa771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:02, skipping insertion in model container [2020-11-29 19:25:02,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:02" (3/3) ... [2020-11-29 19:25:02,854 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound10.c [2020-11-29 19:25:02,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:25:02,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 19:25:02,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 19:25:02,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:25:02,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:25:02,917 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:25:02,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:25:02,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:25:02,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:25:02,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:25:02,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:25:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 19:25:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:25:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:02,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:02,940 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-29 19:25:02,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:02,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516743968] [2020-11-29 19:25:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:03,091 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 19:25:03,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516743968] [2020-11-29 19:25:03,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:03,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:25:03,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293450925] [2020-11-29 19:25:03,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:25:03,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:25:03,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:03,113 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 19:25:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:03,130 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-11-29 19:25:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:25:03,131 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 19:25:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:03,139 INFO L225 Difference]: With dead ends: 43 [2020-11-29 19:25:03,140 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 19:25:03,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 19:25:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 19:25:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:25:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-29 19:25:03,170 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-11-29 19:25:03,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:03,170 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-29 19:25:03,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:25:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-29 19:25:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:25:03,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:03,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:03,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:25:03,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-29 19:25:03,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:03,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711663748] [2020-11-29 19:25:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:03,198 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:25:03,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621162197] [2020-11-29 19:25:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:25:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:03,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:25:03,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:03,407 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 19:25:03,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711663748] [2020-11-29 19:25:03,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:25:03,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621162197] [2020-11-29 19:25:03,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:03,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:25:03,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453080059] [2020-11-29 19:25:03,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:25:03,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:03,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:25:03,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:25:03,411 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-29 19:25:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:03,471 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 19:25:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:25:03,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 19:25:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:03,473 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:25:03,473 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:25:03,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 19:25:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:25:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 19:25:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 19:25:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-29 19:25:03,478 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-29 19:25:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:03,479 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-29 19:25:03,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:25:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-29 19:25:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:25:03,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:03,480 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:03,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:25:03,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2132918982, now seen corresponding path program 1 times [2020-11-29 19:25:03,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:03,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665783639] [2020-11-29 19:25:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:03,722 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:25:03,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569534643] [2020-11-29 19:25:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:25:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:03,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:25:03,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:03,895 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 19:25:03,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665783639] [2020-11-29 19:25:03,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:25:03,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569534643] [2020-11-29 19:25:03,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:25:03,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:25:03,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563923582] [2020-11-29 19:25:03,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:25:03,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:03,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:25:03,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:25:03,898 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-11-29 19:25:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:06,087 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-11-29 19:25:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:25:06,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 19:25:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:06,089 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:25:06,089 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 19:25:06,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:25:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 19:25:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-29 19:25:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 19:25:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 19:25:06,098 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-11-29 19:25:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:06,099 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 19:25:06,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:25:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 19:25:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:25:06,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:06,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:06,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:25:06,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:06,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2049083668, now seen corresponding path program 1 times [2020-11-29 19:25:06,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:06,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954227153] [2020-11-29 19:25:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:06,342 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:25:06,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597975895] [2020-11-29 19:25:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:25:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:06,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:25:06,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:06,436 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:25:06,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:25:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:25:06,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954227153] [2020-11-29 19:25:06,520 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:25:06,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597975895] [2020-11-29 19:25:06,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:06,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:25:06,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326346289] [2020-11-29 19:25:06,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:25:06,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:25:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:25:06,523 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2020-11-29 19:25:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:10,785 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 19:25:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:25:10,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 19:25:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:10,788 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:25:10,788 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 19:25:10,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:25:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 19:25:10,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 19:25:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:25:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 19:25:10,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-11-29 19:25:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:10,794 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 19:25:10,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:25:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 19:25:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:25:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:10,800 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:11,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:25:11,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2049123390, now seen corresponding path program 2 times [2020-11-29 19:25:11,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:11,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244945801] [2020-11-29 19:25:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:11,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:25:11,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956206616] [2020-11-29 19:25:11,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:25:11,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:25:11,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:25:11,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 19:25:11,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:32,585 WARN L193 SmtUtils]: Spent 19.36 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:25:32,589 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:25:32,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:25:41,452 WARN L193 SmtUtils]: Spent 4.72 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 19:25:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:45,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244945801] [2020-11-29 19:25:45,730 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:25:45,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956206616] [2020-11-29 19:25:45,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:25:45,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:25:45,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946019359] [2020-11-29 19:25:45,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:25:45,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:45,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:25:45,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=36, Unknown=5, NotChecked=0, Total=56 [2020-11-29 19:25:45,732 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-11-29 19:26:04,525 WARN L193 SmtUtils]: Spent 9.20 s on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2020-11-29 19:26:05,281 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 19:26:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:26:13,331 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 19:26:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:26:13,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-29 19:26:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:26:13,336 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:26:13,336 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 19:26:13,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=34, Invalid=92, Unknown=6, NotChecked=0, Total=132 [2020-11-29 19:26:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 19:26:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-29 19:26:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:26:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 19:26:13,342 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2020-11-29 19:26:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:26:13,343 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 19:26:13,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:26:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 19:26:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:26:13,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:26:13,344 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:26:13,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:26:13,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:26:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:26:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1070641094, now seen corresponding path program 3 times [2020-11-29 19:26:13,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:26:13,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268894720] [2020-11-29 19:26:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:26:13,560 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:26:13,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082772451] [2020-11-29 19:26:13,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/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 19:26:13,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 19:26:13,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:26:13,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 19:26:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:26:13,684 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:26:13,685 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:26:15,710 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2020-11-29 19:26:18,147 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 19:26:18,150 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:26:18,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:26:24,147 WARN L193 SmtUtils]: Spent 5.42 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 19:26:47,138 WARN L193 SmtUtils]: Spent 15.84 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-11-29 19:26:47,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:26:47,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:26:59,626 WARN L193 SmtUtils]: Spent 12.43 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 19:27:21,340 WARN L193 SmtUtils]: Spent 21.71 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-29 19:27:39,401 WARN L193 SmtUtils]: Spent 9.24 s on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 19:27:41,452 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:27:49,765 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (not (= (+ (* .cse1 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0))) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) is different from false [2020-11-29 19:27:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:27:49,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268894720] [2020-11-29 19:27:49,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:27:49,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082772451] [2020-11-29 19:27:49,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:27:49,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 19:27:49,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113865905] [2020-11-29 19:27:49,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:27:49,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:27:49,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:27:49,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=4, NotChecked=14, Total=90 [2020-11-29 19:27:49,790 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-29 19:28:06,689 WARN L193 SmtUtils]: Spent 12.86 s on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2020-11-29 19:28:14,875 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse3 (div .cse2 c_ULTIMATE.start_main_~z~0))) (and (or (and (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (not (= (+ (* .cse1 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~z~0))) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start_main_~z~0))))) (<= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (= (mod c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 c_ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse3 (- 1)) c_ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* c_ULTIMATE.start_main_~z~0 .cse3) (* .cse3 (- 1)) 1) c_ULTIMATE.start_main_~z~0) 0) (= (+ (* .cse3 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (+ (* .cse3 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~z~0)) (<= 1 c_ULTIMATE.start_main_~z~0)))) is different from false [2020-11-29 19:29:43,598 WARN L193 SmtUtils]: Spent 1.32 m on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-29 19:29:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:29:47,690 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 19:29:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:29:47,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-11-29 19:29:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:29:47,704 INFO L225 Difference]: With dead ends: 23 [2020-11-29 19:29:47,704 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:29:47,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 157.3s TimeCoverageRelationStatistics Valid=43, Invalid=88, Unknown=9, NotChecked=42, Total=182 [2020-11-29 19:29:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:29:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:29:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:29:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:29:47,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-29 19:29:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:29:47,705 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:29:47,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:29:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:29:47,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:29:47,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 19:29:47,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:29:55,589 WARN L193 SmtUtils]: Spent 7.64 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 19:30:21,958 WARN L193 SmtUtils]: Spent 26.37 s on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-11-29 19:30:21,964 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 19:30:21,964 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse0) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))))) [2020-11-29 19:30:21,964 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-11-29 19:30:21,964 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L270 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ ULTIMATE.start_main_~x~0 (- 1)) ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~z~0)) [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:30:21,965 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-29 19:30:21,966 INFO L277 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-11-29 19:30:21,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:30:21 BoogieIcfgContainer [2020-11-29 19:30:21,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:30:21,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:30:21,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:30:21,990 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:30:21,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:02" (3/4) ... [2020-11-29 19:30:21,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:30:22,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 19:30:22,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:30:22,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:30:22,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:30:22,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_29f790a5-b116-4fa7-bbac-54319629ace6/bin/uautomizer/witness.graphml [2020-11-29 19:30:22,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:30:22,054 INFO L168 Benchmark]: Toolchain (without parser) took 319885.59 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 87.2 MB in the beginning and 87.4 MB in the end (delta: -172.5 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,055 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:22,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 87.2 MB in the end (delta: 41.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.59 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 85.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,058 INFO L168 Benchmark]: Boogie Preprocessor took 21.18 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:30:22,059 INFO L168 Benchmark]: RCFGBuilder took 329.77 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 71.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,061 INFO L168 Benchmark]: TraceAbstraction took 319144.51 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.2 MB in the beginning and 90.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,062 INFO L168 Benchmark]: Witness Printer took 68.39 ms. Allocated memory is still 134.2 MB. Free memory was 90.6 MB in the beginning and 87.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:30:22,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 87.2 MB in the end (delta: 41.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.59 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 85.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.18 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 329.77 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 71.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 319144.51 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.2 MB in the beginning and 90.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 68.39 ms. Allocated memory is still 134.2 MB. Free memory was 90.6 MB in the beginning and 87.4 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: 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: 39]: Loop Invariant Derived loop invariant: (((y % z == 0 && (x + -1) % z == 0) && z * x + 1 == x + y) && 1 == cond) && 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((x == 1 && z == y) && 1 <= z) || ((((((y % z == 0 && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && (x + -1) % z == 0) && ((x + -1) / z + -1) % z == 0) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 284.9s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 152.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 34.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 31 SDslu, 174 SDs, 0 SdLazy, 137 SolverSat, 21 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 33.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 203.9s 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 111 HoareAnnotationTreeSize, 4 FomulaSimplifications, 512 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 34.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 131.0s InterpolantComputationTime, 102 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 2 QuantifiedInterpolants, 11433 SizeOfPredicates, 34 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 14/27 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...