./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.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_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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 6ce961dac043765dba705431aaca591312528e9c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:00:08,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:00:08,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:00:08,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:00:08,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:00:08,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:00:08,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:00:08,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:00:08,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:00:08,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:00:08,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:00:08,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:00:08,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:00:08,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:00:08,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:00:08,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:00:08,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:00:08,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:00:08,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:00:08,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:00:08,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:00:08,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:00:08,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:00:08,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:00:08,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:00:08,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:00:08,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:00:08,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:00:08,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:00:08,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:00:08,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:00:08,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:00:08,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:00:08,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:00:08,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:00:08,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:00:08,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:00:08,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:00:08,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:00:08,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:00:08,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:00:08,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:00:08,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:00:08,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:00:08,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:00:08,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:00:08,794 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:00:08,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:00:08,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:00:08,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:00:08,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:00:08,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:00:08,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:00:08,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:00:08,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:00:08,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:00:08,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:00:08,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:00:08,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:00:08,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:00:08,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:00:08,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:00:08,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:00:08,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:00:08,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:00:08,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:00:08,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:00:08,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:00:08,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:00:08,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:00:08,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:00:08,801 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_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ce961dac043765dba705431aaca591312528e9c [2020-11-29 20:00:09,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:00:09,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:00:09,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:00:09,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:00:09,132 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:00:09,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-11-29 20:00:09,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/data/78db765e0/9a78cf51bf94433da4686112913d0bed/FLAGd2370bef1 [2020-11-29 20:00:09,848 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:00:09,849 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2020-11-29 20:00:09,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/data/78db765e0/9a78cf51bf94433da4686112913d0bed/FLAGd2370bef1 [2020-11-29 20:00:10,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/data/78db765e0/9a78cf51bf94433da4686112913d0bed [2020-11-29 20:00:10,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:00:10,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:00:10,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:10,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:00:10,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:00:10,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30946557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10, skipping insertion in model container [2020-11-29 20:00:10,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:00:10,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:00:10,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:10,518 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:00:10,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:00:10,555 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:00:10,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10 WrapperNode [2020-11-29 20:00:10,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:00:10,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:10,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:00:10,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:00:10,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:00:10,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:00:10,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:00:10,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:00:10,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... [2020-11-29 20:00:10,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:00:10,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:00:10,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:00:10,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:00:10,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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 20:00:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:00:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:00:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:00:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:00:11,093 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:00:11,094 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-29 20:00:11,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:11 BoogieIcfgContainer [2020-11-29 20:00:11,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:00:11,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:00:11,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:00:11,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:00:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:00:10" (1/3) ... [2020-11-29 20:00:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a46b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:11, skipping insertion in model container [2020-11-29 20:00:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:00:10" (2/3) ... [2020-11-29 20:00:11,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a46b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:00:11, skipping insertion in model container [2020-11-29 20:00:11,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:11" (3/3) ... [2020-11-29 20:00:11,107 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2020-11-29 20:00:11,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:00:11,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:00:11,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:00:11,204 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:00:11,205 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:00:11,205 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:00:11,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:00:11,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:00:11,205 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:00:11,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:00:11,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:00:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-29 20:00:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:00:11,246 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:11,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:11,247 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:11,278 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-29 20:00:11,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:11,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216419217] [2020-11-29 20:00:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:11,590 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 20:00:11,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216419217] [2020-11-29 20:00:11,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:11,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:00:11,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194835999] [2020-11-29 20:00:11,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:00:11,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:11,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:00:11,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:00:11,629 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-29 20:00:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:11,654 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-11-29 20:00:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:00:11,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 20:00:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:11,669 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:00:11,669 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:00:11,674 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 20:00:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:00:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 20:00:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:00:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-29 20:00:11,736 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-11-29 20:00:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:11,737 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-29 20:00:11,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:00:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-29 20:00:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:00:11,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:11,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:11,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:00:11,739 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-29 20:00:11,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:11,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221114230] [2020-11-29 20:00:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:11,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:00:11,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867316016] [2020-11-29 20:00:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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 20:00:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:11,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:00:11,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:11,968 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 20:00:11,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221114230] [2020-11-29 20:00:11,969 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:00:11,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867316016] [2020-11-29 20:00:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:11,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:00:11,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20533196] [2020-11-29 20:00:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:00:11,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:11,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:00:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:00:11,973 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-29 20:00:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:12,062 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 20:00:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:00:12,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 20:00:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:12,064 INFO L225 Difference]: With dead ends: 29 [2020-11-29 20:00:12,065 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 20:00:12,066 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 20:00:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 20:00:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 20:00:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 20:00:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-29 20:00:12,077 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-11-29 20:00:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:12,079 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-29 20:00:12,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:00:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-29 20:00:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:00:12,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:12,083 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:12,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:00:12,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:12,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:12,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2132918982, now seen corresponding path program 1 times [2020-11-29 20:00:12,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:12,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782530041] [2020-11-29 20:00:12,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:12,341 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:00:12,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372091402] [2020-11-29 20:00:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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 20:00:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:00:12,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 20:00:12,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:12,485 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:00:12,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:12,547 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:00:12,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:12,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:12,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:00:12,835 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 20:00:12,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782530041] [2020-11-29 20:00:12,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:00:12,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372091402] [2020-11-29 20:00:12,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:00:12,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 20:00:12,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76741422] [2020-11-29 20:00:12,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:00:12,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:00:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:00:12,846 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2020-11-29 20:00:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:13,182 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-29 20:00:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:00:13,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-11-29 20:00:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:13,184 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:00:13,184 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 20:00:13,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:00:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 20:00:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-29 20:00:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 20:00:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-29 20:00:13,192 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2020-11-29 20:00:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:13,192 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-29 20:00:13,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:00:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-29 20:00:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:00:13,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:00:13,193 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:00:13,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:00:13,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:00:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:00:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2049123390, now seen corresponding path program 2 times [2020-11-29 20:00:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:00:13,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162519520] [2020-11-29 20:00:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:00:13,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:00:13,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446861527] [2020-11-29 20:00:13,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/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 20:00:13,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:00:13,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:00:13,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:00:13,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:00:13,589 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:00:13,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:00:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:00:13,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162519520] [2020-11-29 20:00:13,705 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:00:13,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446861527] [2020-11-29 20:00:13,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:00:13,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:00:13,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049851942] [2020-11-29 20:00:13,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:00:13,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:00:13,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:00:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:00:13,711 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-11-29 20:00:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:00:13,797 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-29 20:00:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:00:13,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 20:00:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:00:13,799 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:00:13,799 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:00:13,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:00:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:00:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:00:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:00:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:00:13,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 20:00:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:00:13,801 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:00:13,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:00:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:00:13,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:00:14,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:00:14,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:00:14,228 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2020-11-29 20:00:14,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 20:00:14,310 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~k~0)) (.cse1 (<= ULTIMATE.start_main_~k~0 2)) (.cse2 (<= ULTIMATE.start_main_~z~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (<= 2 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) .cse3) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0 .cse1 .cse2 .cse3))) [2020-11-29 20:00:14,310 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 20:00:14,311 INFO L270 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~k~0)) (.cse1 (<= ULTIMATE.start_main_~k~0 2)) (.cse2 (<= ULTIMATE.start_main_~z~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0 .cse1 .cse2 .cse3) (and (<= 2 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) .cse3))) [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 20:00:14,312 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 20:00:14,313 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 20:00:14,313 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 20:00:14,313 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-29 20:00:14,313 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-29 20:00:14,313 INFO L277 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-11-29 20:00:14,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:00:14 BoogieIcfgContainer [2020-11-29 20:00:14,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:00:14,355 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:00:14,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:00:14,356 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:00:14,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:00:11" (3/4) ... [2020-11-29 20:00:14,361 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:00:14,373 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 20:00:14,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:00:14,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:14,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:00:14,425 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cc99822c-7c41-466f-9c6a-2c93ef3e8bfb/bin/uautomizer/witness.graphml [2020-11-29 20:00:14,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:00:14,427 INFO L168 Benchmark]: Toolchain (without parser) took 4205.70 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 56.2 MB in the beginning and 56.3 MB in the end (delta: -161.1 kB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,427 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 45.9 MB in the beginning and 45.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:14,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 63.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.06 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 61.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,430 INFO L168 Benchmark]: Boogie Preprocessor took 28.04 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 61.0 MB in the end (delta: 851.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:00:14,430 INFO L168 Benchmark]: RCFGBuilder took 465.40 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 47.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,431 INFO L168 Benchmark]: TraceAbstraction took 3256.66 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 47.4 MB in the beginning and 59.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,432 INFO L168 Benchmark]: Witness Printer took 70.20 ms. Allocated memory is still 119.5 MB. Free memory was 59.5 MB in the beginning and 56.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:00:14,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 45.9 MB in the beginning and 45.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 63.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.06 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 61.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.04 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 61.0 MB in the end (delta: 851.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 465.40 ms. Allocated memory is still 86.0 MB. Free memory was 60.7 MB in the beginning and 47.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3256.66 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 47.4 MB in the beginning and 59.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Witness Printer took 70.20 ms. Allocated memory is still 119.5 MB. Free memory was 59.5 MB in the beginning and 56.3 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: (((((((x == 1 && 1 == cond) && z == y) && 1 <= c) && 0 <= k) && k <= 2) && z <= 2) && 1 <= z) || (((((((2 <= c && 1 <= cond) && z * z == y) && 0 <= k) && k <= 2) && z <= 2) && x == z + 1) && 1 <= z) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((2 <= c && 1 <= cond) && z * z == y) && 0 <= k) && k <= 2) && z <= 2) && x == z + 1) && 1 <= z) || ((((((x == 1 && z == y) && 1 <= c) && 0 <= k) && k <= 2) && z <= 2) && 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 33 SDslu, 85 SDs, 0 SdLazy, 108 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 109 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4983 SizeOfPredicates, 20 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...