./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.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_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/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 df488cb65bffacdfa8d6992f6ed013a3193b9964 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:31:18,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:31:18,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:31:18,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:31:18,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:31:18,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:31:18,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:31:18,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:31:18,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:31:18,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:31:18,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:31:18,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:31:18,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:31:18,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:31:18,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:31:18,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:31:18,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:31:18,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:31:18,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:31:18,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:31:18,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:31:18,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:31:18,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:31:18,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:31:18,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:31:18,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:31:18,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:31:18,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:31:18,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:31:18,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:31:18,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:31:18,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:31:18,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:31:18,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:31:18,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:31:18,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:31:18,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:31:18,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:31:18,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:31:18,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:31:18,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:31:18,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:31:18,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:31:18,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:31:18,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:31:18,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:31:18,816 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:31:18,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:31:18,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:31:18,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:31:18,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:31:18,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:31:18,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:31:18,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:31:18,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:31:18,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:31:18,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:31:18,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:31:18,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:31:18,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:31:18,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:31:18,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:31:18,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:31:18,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:31:18,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:31:18,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:31:18,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:31:18,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:31:18,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:31:18,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:31:18,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:31:18,824 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_0c1a02b1-2fea-4859-925a-ee4ea72b264c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df488cb65bffacdfa8d6992f6ed013a3193b9964 [2020-11-29 19:31:19,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:31:19,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:31:19,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:31:19,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:31:19,182 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:31:19,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2020-11-29 19:31:19,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/data/5696e7d97/39864c3ba5ff45e5a918c67de5c79e16/FLAGd343e6a6a [2020-11-29 19:31:19,975 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:31:19,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2020-11-29 19:31:19,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/data/5696e7d97/39864c3ba5ff45e5a918c67de5c79e16/FLAGd343e6a6a [2020-11-29 19:31:20,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/data/5696e7d97/39864c3ba5ff45e5a918c67de5c79e16 [2020-11-29 19:31:20,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:31:20,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:31:20,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:20,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:31:20,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:31:20,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264e5ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20, skipping insertion in model container [2020-11-29 19:31:20,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:31:20,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:31:20,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:20,596 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:31:20,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:31:20,634 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:31:20,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20 WrapperNode [2020-11-29 19:31:20,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:31:20,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:20,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:31:20,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:31:20,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:31:20,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:31:20,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:31:20,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:31:20,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... [2020-11-29 19:31:20,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:31:20,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:31:20,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:31:20,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:31:20,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:31:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:31:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:31:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:31:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:31:21,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:31:21,350 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 19:31:21,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:21 BoogieIcfgContainer [2020-11-29 19:31:21,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:31:21,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:31:21,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:31:21,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:31:21,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:31:20" (1/3) ... [2020-11-29 19:31:21,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e19953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:21, skipping insertion in model container [2020-11-29 19:31:21,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:31:20" (2/3) ... [2020-11-29 19:31:21,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e19953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:31:21, skipping insertion in model container [2020-11-29 19:31:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:21" (3/3) ... [2020-11-29 19:31:21,381 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound10.c [2020-11-29 19:31:21,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:31:21,395 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 19:31:21,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 19:31:21,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:31:21,431 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:31:21,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:31:21,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:31:21,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:31:21,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:31:21,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:31:21,433 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:31:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 19:31:21,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:31:21,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:21,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:21,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-29 19:31:21,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:21,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944283899] [2020-11-29 19:31:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:21,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944283899] [2020-11-29 19:31:21,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:21,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:31:21,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037538762] [2020-11-29 19:31:21,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:31:21,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:31:21,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:31:21,667 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-29 19:31:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:21,687 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-11-29 19:31:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:31:21,689 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:31:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:21,699 INFO L225 Difference]: With dead ends: 37 [2020-11-29 19:31:21,700 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:31:21,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:31:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:31:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 19:31:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:31:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 19:31:21,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2020-11-29 19:31:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:21,745 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 19:31:21,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:31:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 19:31:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:31:21,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:21,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:21,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:31:21,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:21,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-29 19:31:21,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:21,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120035602] [2020-11-29 19:31:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:21,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:31:21,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532015127] [2020-11-29 19:31:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:21,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:31:21,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:21,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120035602] [2020-11-29 19:31:21,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:31:21,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532015127] [2020-11-29 19:31:21,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:21,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:31:21,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005013253] [2020-11-29 19:31:21,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:31:21,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:21,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:31:21,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:31:21,992 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-11-29 19:31:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:22,102 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-29 19:31:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:31:22,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:31:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:22,104 INFO L225 Difference]: With dead ends: 30 [2020-11-29 19:31:22,105 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:31:22,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:31:22,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:31:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 19:31:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:31:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-29 19:31:22,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-29 19:31:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:22,119 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-29 19:31:22,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:31:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-29 19:31:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:31:22,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:22,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:22,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:31:22,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:22,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1811972666, now seen corresponding path program 1 times [2020-11-29 19:31:22,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:22,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972056814] [2020-11-29 19:31:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:22,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:31:22,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948429195] [2020-11-29 19:31:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:22,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:31:22,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:22,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972056814] [2020-11-29 19:31:22,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:31:22,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948429195] [2020-11-29 19:31:22,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:31:22,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:31:22,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611190985] [2020-11-29 19:31:22,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:31:22,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:31:22,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:31:22,608 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-29 19:31:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:24,784 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-29 19:31:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:31:24,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 19:31:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:24,789 INFO L225 Difference]: With dead ends: 30 [2020-11-29 19:31:24,789 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:31:24,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:31:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:31:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-29 19:31:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:31:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-29 19:31:24,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-11-29 19:31:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:24,796 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-29 19:31:24,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:31:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-29 19:31:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:31:24,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:24,800 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:25,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:25,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 336535162, now seen corresponding path program 1 times [2020-11-29 19:31:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:25,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802938365] [2020-11-29 19:31:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:25,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:31:25,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135204180] [2020-11-29 19:31:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:25,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:31:25,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:31:25,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802938365] [2020-11-29 19:31:25,154 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:31:25,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135204180] [2020-11-29 19:31:25,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:31:25,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:31:25,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687468616] [2020-11-29 19:31:25,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:31:25,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:31:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:31:25,157 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-29 19:31:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:25,208 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-29 19:31:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:31:25,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 19:31:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:25,209 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:31:25,210 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:31:25,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:31:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:31:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 19:31:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:31:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 19:31:25,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-11-29 19:31:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:25,216 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 19:31:25,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:31:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 19:31:25,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:31:25,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:25,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:25,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:25,433 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1334571699, now seen corresponding path program 1 times [2020-11-29 19:31:25,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:25,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163222613] [2020-11-29 19:31:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:25,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:31:25,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738457937] [2020-11-29 19:31:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:31:25,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:31:25,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:25,577 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:31:25,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:31:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:31:25,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163222613] [2020-11-29 19:31:25,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:31:25,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738457937] [2020-11-29 19:31:25,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:31:25,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:31:25,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797753863] [2020-11-29 19:31:25,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:31:25,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:25,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:31:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:31:25,661 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-29 19:31:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:31:29,901 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 19:31:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:31:29,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 19:31:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:31:29,905 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:31:29,905 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:31:29,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:31:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:31:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 19:31:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:31:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 19:31:29,913 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-11-29 19:31:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:31:29,914 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 19:31:29,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:31:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 19:31:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:31:29,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:31:29,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:31:30,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:30,141 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:31:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:31:30,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1576870778, now seen corresponding path program 2 times [2020-11-29 19:31:30,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:31:30,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372248127] [2020-11-29 19:31:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:31:30,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:31:30,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730722225] [2020-11-29 19:31:30,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:31:30,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:31:30,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:31:30,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:31:30,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:31:30,318 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:31:30,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:31:32,438 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)) (<= 1 c_ULTIMATE.start_main_~z~0)) is different from false [2020-11-29 19:31:32,443 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:31:32,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:31:38,636 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 19:31:38,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:31:38,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:31:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 19:31:38,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372248127] [2020-11-29 19:31:38,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:31:38,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730722225] [2020-11-29 19:31:38,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:31:38,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 19:31:38,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143632457] [2020-11-29 19:31:38,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:31:38,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:31:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:31:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=52, Unknown=2, NotChecked=14, Total=90 [2020-11-29 19:31:38,864 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-29 19:32:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:32:02,129 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-29 19:32:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:32:02,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 19:32:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:32:02,139 INFO L225 Difference]: With dead ends: 37 [2020-11-29 19:32:02,139 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:32:02,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=48, Invalid=135, Unknown=3, NotChecked=24, Total=210 [2020-11-29 19:32:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:32:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2020-11-29 19:32:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 19:32:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-29 19:32:02,147 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2020-11-29 19:32:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:32:02,148 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-29 19:32:02,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:32:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-29 19:32:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:32:02,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:32:02,149 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:32:02,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 19:32:02,365 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:32:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:32:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1638396498, now seen corresponding path program 2 times [2020-11-29 19:32:02,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:32:02,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418490929] [2020-11-29 19:32:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:32:02,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:32:02,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868475796] [2020-11-29 19:32:02,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:32:02,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:32:02,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:32:02,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:32:02,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:32:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:32:02,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418490929] [2020-11-29 19:32:02,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:32:02,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868475796] [2020-11-29 19:32:02,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:32:02,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:32:02,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262473644] [2020-11-29 19:32:02,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:32:02,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:32:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:32:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:32:02,507 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-11-29 19:32:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:32:02,883 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-29 19:32:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:32:02,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 19:32:02,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:32:02,884 INFO L225 Difference]: With dead ends: 31 [2020-11-29 19:32:02,884 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 19:32:02,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:32:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 19:32:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-29 19:32:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 19:32:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-29 19:32:02,891 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-11-29 19:32:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:32:02,892 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-29 19:32:02,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:32:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-29 19:32:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:32:02,893 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:32:02,893 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:32:03,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:32:03,095 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:32:03,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:32:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash -8965934, now seen corresponding path program 3 times [2020-11-29 19:32:03,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:32:03,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144588858] [2020-11-29 19:32:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:32:03,111 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:32:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840427850] [2020-11-29 19:32:03,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:32:03,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 19:32:03,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:32:03,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:32:03,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:32:03,338 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 19:32:03,342 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:32:03,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:32:07,321 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:32:07,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:32:07,360 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:32:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 19:32:07,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144588858] [2020-11-29 19:32:07,450 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:32:07,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840427850] [2020-11-29 19:32:07,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:32:07,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:32:07,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261579367] [2020-11-29 19:32:07,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:32:07,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:32:07,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:32:07,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-29 19:32:07,452 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2020-11-29 19:32:19,987 WARN L193 SmtUtils]: Spent 10.65 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 19:32:33,954 WARN L193 SmtUtils]: Spent 13.92 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 19:32:38,485 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 19:32:54,393 WARN L193 SmtUtils]: Spent 13.79 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 19:32:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:32:59,618 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 19:32:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:32:59,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 19:32:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:32:59,619 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:32:59,619 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 19:32:59,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=1, NotChecked=0, Total=90 [2020-11-29 19:32:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 19:32:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-29 19:32:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 19:32:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-29 19:32:59,627 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2020-11-29 19:32:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:32:59,627 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-29 19:32:59,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:32:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-29 19:32:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:32:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:32:59,628 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:32:59,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:32:59,836 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:32:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:32:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash -277986590, now seen corresponding path program 3 times [2020-11-29 19:32:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:32:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525138010] [2020-11-29 19:32:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:32:59,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:32:59,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958696650] [2020-11-29 19:32:59,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:32:59,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 19:32:59,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:32:59,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 19:32:59,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:32:59,972 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:32:59,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,336 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:33:04,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,360 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,370 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 19:33:04,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:04,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:33:09,133 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 19:33:23,670 WARN L193 SmtUtils]: Spent 14.53 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:33:26,397 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 3 [2020-11-29 19:33:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-29 19:33:26,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525138010] [2020-11-29 19:33:26,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:33:26,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958696650] [2020-11-29 19:33:26,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:33:26,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:33:26,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370516248] [2020-11-29 19:33:26,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:33:26,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:33:26,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:33:26,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-29 19:33:26,407 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-29 19:33:42,906 WARN L193 SmtUtils]: Spent 15.72 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 19:34:00,309 WARN L193 SmtUtils]: Spent 17.24 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-29 19:34:19,198 WARN L193 SmtUtils]: Spent 14.04 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 19:34:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:34:19,268 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 19:34:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:34:19,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 19:34:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:34:19,278 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:34:19,278 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:34:19,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2020-11-29 19:34:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:34:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:34:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:34:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:34:19,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-29 19:34:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:34:19,280 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:34:19,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:34:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:34:19,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:34:19,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 19:34:19,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:34:35,360 WARN L193 SmtUtils]: Spent 15.82 s on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 19:34:43,616 WARN L193 SmtUtils]: Spent 8.25 s on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-11-29 19:34:43,623 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0)))) [2020-11-29 19:34:43,623 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2020-11-29 19:34:43,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 19:34:43,623 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:34:43,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:34:43,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L270 CegarLoopResult]: At program point L16-1(lines 38 39) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~z~0))) [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-29 19:34:43,624 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:34:43,625 INFO L277 CegarLoopResult]: At program point L50(lines 23 51) the Hoare annotation is: true [2020-11-29 19:34:43,625 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-29 19:34:43,625 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-29 19:34:43,625 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 19:34:43,625 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-29 19:34:43,625 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2020-11-29 19:34:43,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:34:43 BoogieIcfgContainer [2020-11-29 19:34:43,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:34:43,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:34:43,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:34:43,650 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:34:43,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:31:21" (3/4) ... [2020-11-29 19:34:43,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:34:43,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 19:34:43,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 19:34:43,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:34:43,664 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:34:43,712 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c1a02b1-2fea-4859-925a-ee4ea72b264c/bin/uautomizer/witness.graphml [2020-11-29 19:34:43,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:34:43,713 INFO L168 Benchmark]: Toolchain (without parser) took 203388.89 ms. Allocated memory is still 136.3 MB. Free memory was 110.5 MB in the beginning and 63.0 MB in the end (delta: 47.6 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,714 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:43,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.86 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 113.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 136.3 MB. Free memory was 113.4 MB in the beginning and 112.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,716 INFO L168 Benchmark]: Boogie Preprocessor took 26.51 ms. Allocated memory is still 136.3 MB. Free memory was 112.1 MB in the beginning and 110.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:34:43,717 INFO L168 Benchmark]: RCFGBuilder took 642.13 ms. Allocated memory is still 136.3 MB. Free memory was 110.8 MB in the beginning and 98.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,718 INFO L168 Benchmark]: TraceAbstraction took 202278.71 ms. Allocated memory is still 136.3 MB. Free memory was 97.5 MB in the beginning and 66.1 MB in the end (delta: 31.4 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,719 INFO L168 Benchmark]: Witness Printer took 63.37 ms. Allocated memory is still 136.3 MB. Free memory was 66.1 MB in the beginning and 63.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:34:43,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 48.8 MB in the beginning and 48.7 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.86 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 113.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 136.3 MB. Free memory was 113.4 MB in the beginning and 112.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.51 ms. Allocated memory is still 136.3 MB. Free memory was 112.1 MB in the beginning and 110.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 642.13 ms. Allocated memory is still 136.3 MB. Free memory was 110.8 MB in the beginning and 98.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 202278.71 ms. Allocated memory is still 136.3 MB. Free memory was 97.5 MB in the beginning and 66.1 MB in the end (delta: 31.4 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * Witness Printer took 63.37 ms. Allocated memory is still 136.3 MB. Free memory was 66.1 MB in the beginning and 63.0 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: 38]: Loop Invariant Derived loop invariant: ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && z * x + 1 == x + y) && (x + -1) % z == 0) && 1 == cond) && 1 <= z - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((x == 1 && counter <= 0) && z == y) && 1 <= c) && 1 <= z) || ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && (x + -1) % z == 0) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 178.0s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 135.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 24.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 100 SDslu, 258 SDs, 0 SdLazy, 175 SolverSat, 33 SolverUnsat, 19 SolverUnknown, 0 SolverNotchecked, 42.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 109.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, 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, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 96 HoareAnnotationTreeSize, 4 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 24.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 148 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 13901 SizeOfPredicates, 46 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 42/66 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...