./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.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_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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 0210ea7cff24575c999763dcb5f285e091847174 ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:20:36,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:20:36,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:20:36,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:20:36,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:20:36,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:20:36,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:20:36,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:20:36,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:20:36,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:20:36,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:20:36,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:20:36,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:20:36,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:20:36,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:20:36,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:20:36,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:20:36,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:20:36,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:20:36,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:20:36,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:20:36,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:20:36,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:20:36,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:20:36,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:20:36,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:20:36,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:20:36,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:20:36,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:20:36,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:20:36,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:20:36,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:20:36,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:20:36,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:20:36,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:20:36,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:20:36,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:20:36,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:20:36,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:20:36,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:20:36,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:20:36,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:20:36,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:20:36,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:20:36,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:20:36,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:20:36,806 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:20:36,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:20:36,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:20:36,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:20:36,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:20:36,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:20:36,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:20:36,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:20:36,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:20:36,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:20:36,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:20:36,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:20:36,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:20:36,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:20:36,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:20:36,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:20:36,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:20:36,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:20:36,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:20:36,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:20:36,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:20:36,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:20:36,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:20:36,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:20:36,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:20:36,812 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_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0210ea7cff24575c999763dcb5f285e091847174 [2020-11-30 01:20:37,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:20:37,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:20:37,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:20:37,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:20:37,093 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:20:37,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2020-11-30 01:20:37,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/data/e85496124/67387d2800374f34815ef26873d3663e/FLAG924a6c75f [2020-11-30 01:20:37,738 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:20:37,739 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2020-11-30 01:20:37,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/data/e85496124/67387d2800374f34815ef26873d3663e/FLAG924a6c75f [2020-11-30 01:20:38,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/data/e85496124/67387d2800374f34815ef26873d3663e [2020-11-30 01:20:38,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:20:38,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:20:38,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:20:38,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:20:38,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:20:38,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485bef20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38, skipping insertion in model container [2020-11-30 01:20:38,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:20:38,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:20:38,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:20:38,363 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:20:38,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:20:38,396 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:20:38,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38 WrapperNode [2020-11-30 01:20:38,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:20:38,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:20:38,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:20:38,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:20:38,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:20:38,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:20:38,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:20:38,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:20:38,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... [2020-11-30 01:20:38,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:20:38,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:20:38,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:20:38,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:20:38,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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 [2020-11-30 01:20:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:20:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:20:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:20:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:20:38,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:20:38,740 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-30 01:20:38,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:20:38 BoogieIcfgContainer [2020-11-30 01:20:38,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:20:38,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:20:38,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:20:38,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:20:38,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:20:38" (1/3) ... [2020-11-30 01:20:38,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ef3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:20:38, skipping insertion in model container [2020-11-30 01:20:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:20:38" (2/3) ... [2020-11-30 01:20:38,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ef3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:20:38, skipping insertion in model container [2020-11-30 01:20:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:20:38" (3/3) ... [2020-11-30 01:20:38,768 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound1.c [2020-11-30 01:20:38,780 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:20:38,789 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:20:38,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:20:38,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:20:38,829 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:20:38,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:20:38,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:20:38,830 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:20:38,830 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:20:38,830 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:20:38,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:20:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-30 01:20:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:20:38,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:20:38,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:20:38,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:20:38,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:20:38,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:20:38,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:20:38,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371435241] [2020-11-30 01:20:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:20:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:20:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:20:39,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371435241] [2020-11-30 01:20:39,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:20:39,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:20:39,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890681576] [2020-11-30 01:20:39,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:20:39,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:20:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:20:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:20:39,051 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-30 01:20:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:20:39,069 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2020-11-30 01:20:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:20:39,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:20:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:20:39,079 INFO L225 Difference]: With dead ends: 31 [2020-11-30 01:20:39,079 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 01:20:39,083 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 [2020-11-30 01:20:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 01:20:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 01:20:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:20:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-30 01:20:39,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-30 01:20:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:20:39,117 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-30 01:20:39,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:20:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-30 01:20:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:20:39,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:20:39,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:20:39,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:20:39,119 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:20:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:20:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:20:39,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:20:39,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725820517] [2020-11-30 01:20:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:20:39,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:20:39,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387909840] [2020-11-30 01:20:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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 [2020-11-30 01:20:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:20:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:20:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:20:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:20:39,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725820517] [2020-11-30 01:20:39,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:20:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387909840] [2020-11-30 01:20:39,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:20:39,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:20:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287195783] [2020-11-30 01:20:39,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:20:39,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:20:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:20:39,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:20:39,360 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-11-30 01:20:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:20:39,497 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-30 01:20:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:20:39,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:20:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:20:39,500 INFO L225 Difference]: With dead ends: 23 [2020-11-30 01:20:39,508 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 01:20:39,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:20:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 01:20:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-11-30 01:20:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:20:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-30 01:20:39,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-11-30 01:20:39,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:20:39,514 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-30 01:20:39,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:20:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-30 01:20:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:20:39,519 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:20:39,520 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:20:39,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:20:39,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:20:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:20:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1863233344, now seen corresponding path program 1 times [2020-11-30 01:20:39,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:20:39,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565488501] [2020-11-30 01:20:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:20:39,760 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:20:39,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115932013] [2020-11-30 01:20:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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 [2020-11-30 01:20:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:20:39,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:20:39,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:20:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:20:39,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565488501] [2020-11-30 01:20:39,919 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:20:39,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115932013] [2020-11-30 01:20:39,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:20:39,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:20:39,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666265502] [2020-11-30 01:20:39,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:20:39,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:20:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:20:39,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:20:39,922 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-11-30 01:20:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:20:40,023 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-30 01:20:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:20:40,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 01:20:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:20:40,025 INFO L225 Difference]: With dead ends: 26 [2020-11-30 01:20:40,025 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 01:20:40,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:20:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 01:20:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-30 01:20:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 01:20:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 01:20:40,030 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-11-30 01:20:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:20:40,031 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 01:20:40,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:20:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 01:20:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:20:40,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:20:40,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:20:40,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:20:40,246 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:20:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:20:40,247 INFO L82 PathProgramCache]: Analyzing trace with hash 578669199, now seen corresponding path program 2 times [2020-11-30 01:20:40,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:20:40,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903228289] [2020-11-30 01:20:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:20:40,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:20:40,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812490152] [2020-11-30 01:20:40,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/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 [2020-11-30 01:20:40,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:20:40,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:20:40,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:20:40,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:20:40,353 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:20:40,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:20:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:20:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903228289] [2020-11-30 01:20:40,440 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:20:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812490152] [2020-11-30 01:20:40,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:20:40,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:20:40,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801391639] [2020-11-30 01:20:40,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:20:40,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:20:40,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:20:40,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:20:40,442 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-11-30 01:20:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:20:40,591 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 01:20:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:20:40,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 01:20:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:20:40,592 INFO L225 Difference]: With dead ends: 19 [2020-11-30 01:20:40,592 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:20:40,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:20:40,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:20:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:20:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:20:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:20:40,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-30 01:20:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:20:40,593 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:20:40,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:20:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:20:40,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:20:40,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:20:40,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:20:40,982 INFO L270 CegarLoopResult]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 0 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) .cse0 .cse1 .cse2) (and (= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (<= 1 ULTIMATE.start_main_~c~0) .cse0 .cse1 .cse2))) [2020-11-30 01:20:40,982 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:20:40,982 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:20:40,983 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:20:40,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:20:40,984 INFO L277 CegarLoopResult]: At program point L38(lines 17 39) the Hoare annotation is: true [2020-11-30 01:20:40,984 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-30 01:20:40,984 INFO L270 CegarLoopResult]: At program point L10-1(lines 30 31) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 0 ULTIMATE.start_main_~k~0)) (.cse3 (<= ULTIMATE.start_main_~k~0 1))) (or (and (<= 0 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 0) .cse1 .cse2 .cse3) (and (= 1 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (<= 1 ULTIMATE.start_main_~c~0) .cse1 .cse2 .cse3))) [2020-11-30 01:20:40,984 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-30 01:20:40,985 INFO L277 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: true [2020-11-30 01:20:40,985 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-30 01:20:41,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:20:41 BoogieIcfgContainer [2020-11-30 01:20:41,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:20:41,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:20:41,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:20:41,006 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:20:41,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:20:38" (3/4) ... [2020-11-30 01:20:41,010 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:20:41,021 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 01:20:41,021 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:20:41,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:20:41,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:20:41,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1cd3b8f7-4da8-4a28-97b2-aa4d69e08f84/bin/uautomizer/witness.graphml [2020-11-30 01:20:41,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:20:41,078 INFO L168 Benchmark]: Toolchain (without parser) took 2992.63 ms. Allocated memory was 134.2 MB in the beginning and 163.6 MB in the end (delta: 29.4 MB). Free memory was 109.8 MB in the beginning and 131.4 MB in the end (delta: -21.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:41,079 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 65.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:20:41,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.02 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 109.4 MB in the end (delta: 420.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:41,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 134.2 MB. Free memory was 109.4 MB in the beginning and 108.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:41,080 INFO L168 Benchmark]: Boogie Preprocessor took 21.54 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 106.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:20:41,081 INFO L168 Benchmark]: RCFGBuilder took 284.88 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 95.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:41,082 INFO L168 Benchmark]: TraceAbstraction took 2261.74 ms. Allocated memory was 134.2 MB in the beginning and 163.6 MB in the end (delta: 29.4 MB). Free memory was 94.7 MB in the beginning and 133.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:41,082 INFO L168 Benchmark]: Witness Printer took 70.15 ms. Allocated memory is still 163.6 MB. Free memory was 133.5 MB in the beginning and 131.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:20:41,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 65.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.02 ms. Allocated memory is still 134.2 MB. Free memory was 109.8 MB in the beginning and 109.4 MB in the end (delta: 420.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 134.2 MB. Free memory was 109.4 MB in the beginning and 108.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.54 ms. Allocated memory is still 134.2 MB. Free memory was 108.2 MB in the beginning and 106.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.88 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 95.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2261.74 ms. Allocated memory was 134.2 MB in the beginning and 163.6 MB in the end (delta: 29.4 MB). Free memory was 94.7 MB in the beginning and 133.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. * Witness Printer took 70.15 ms. Allocated memory is still 163.6 MB. Free memory was 133.5 MB in the beginning and 131.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((0 <= c && x == 0) && 1 <= cond) && y == 0) && cond == 1) && 0 <= k) && k <= 1) || ((((((1 == y && 1 <= cond) && x == y * y) && 1 <= c) && cond == 1) && 0 <= k) && k <= 1) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((0 <= c && x == 0) && y == 0) && cond == 1) && 0 <= k) && k <= 1) || ((((((1 == y && 1 <= cond) && x == y * y) && 1 <= c) && cond == 1) && 0 <= k) && k <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 17 SDslu, 43 SDs, 0 SdLazy, 44 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 93 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1569 SizeOfPredicates, 11 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 26 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...