./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/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 75a16db52462b50c2c5ed914802861437583acdd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:34,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:34,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,743 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:34,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:34,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:34,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:34,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:34,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:34,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,749 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_3466040e-929b-440e-88de-33e82dc0f5d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75a16db52462b50c2c5ed914802861437583acdd [2020-11-28 02:56:35,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:35,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:35,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:35,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:35,033 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:35,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c [2020-11-28 02:56:35,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/data/3d3e2a857/4a2e78a96ee54e19b33e3173ba4ca167/FLAG2a9dfe030 [2020-11-28 02:56:35,615 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound2.c [2020-11-28 02:56:35,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/data/3d3e2a857/4a2e78a96ee54e19b33e3173ba4ca167/FLAG2a9dfe030 [2020-11-28 02:56:35,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/data/3d3e2a857/4a2e78a96ee54e19b33e3173ba4ca167 [2020-11-28 02:56:35,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:35,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:35,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:35,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:35,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:35,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60677c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:35, skipping insertion in model container [2020-11-28 02:56:35,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:35,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,189 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,219 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:36,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:36,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:36,592 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:36,593 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-28 02:56:36,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36 BoogieIcfgContainer [2020-11-28 02:56:36,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:36,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:36,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:36,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:36,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:35" (1/3) ... [2020-11-28 02:56:36,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723cf21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:36,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723cf21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36" (3/3) ... [2020-11-28 02:56:36,606 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound2.c [2020-11-28 02:56:36,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:36,624 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:56:36,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:56:36,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:36,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:36,666 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:36,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:36,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:36,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:36,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:36,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 02:56:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:36,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:36,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:36,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:36,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:36,697 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-28 02:56:36,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:36,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663384479] [2020-11-28 02:56:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:36,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663384479] [2020-11-28 02:56:36,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:36,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:36,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106234858] [2020-11-28 02:56:36,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:36,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:36,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:36,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:36,920 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 02:56:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:36,940 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-11-28 02:56:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:36,942 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 02:56:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:36,955 INFO L225 Difference]: With dead ends: 39 [2020-11-28 02:56:36,955 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 02:56:36,962 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 [2020-11-28 02:56:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 02:56:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 02:56:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 02:56:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 02:56:36,997 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-11-28 02:56:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:36,998 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 02:56:36,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 02:56:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:36,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:36,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:36,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:37,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-28 02:56:37,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266035267] [2020-11-28 02:56:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,030 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:37,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832458179] [2020-11-28 02:56:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:37,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266035267] [2020-11-28 02:56:37,343 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:37,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832458179] [2020-11-28 02:56:37,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:37,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:37,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290996750] [2020-11-28 02:56:37,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:37,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:37,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:37,347 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-11-28 02:56:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:37,417 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-28 02:56:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:37,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:56:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:37,418 INFO L225 Difference]: With dead ends: 27 [2020-11-28 02:56:37,418 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 02:56:37,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 02:56:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-28 02:56:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 02:56:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 02:56:37,425 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-11-28 02:56:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:37,426 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 02:56:37,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 02:56:37,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:56:37,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,427 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:56:37,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash -936539036, now seen corresponding path program 1 times [2020-11-28 02:56:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012198113] [2020-11-28 02:56:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,672 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:37,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262282865] [2020-11-28 02:56:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 02:56:37,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012198113] [2020-11-28 02:56:37,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:37,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262282865] [2020-11-28 02:56:37,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:37,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:56:37,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017806205] [2020-11-28 02:56:37,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:37,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:37,900 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-11-28 02:56:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,038 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 02:56:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:40,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 02:56:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,040 INFO L225 Difference]: With dead ends: 27 [2020-11-28 02:56:40,040 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 02:56:40,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 02:56:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-11-28 02:56:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:56:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 02:56:40,046 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2020-11-28 02:56:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,046 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 02:56:40,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 02:56:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:40,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,047 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:40,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:40,248 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash -320965959, now seen corresponding path program 2 times [2020-11-28 02:56:40,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982190290] [2020-11-28 02:56:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:40,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291401224] [2020-11-28 02:56:40,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:40,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:40,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:40,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,401 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:56:40,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:40,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982190290] [2020-11-28 02:56:40,471 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:40,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291401224] [2020-11-28 02:56:40,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:40,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:40,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301958220] [2020-11-28 02:56:40,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:40,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:40,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:40,473 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-28 02:56:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,628 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-28 02:56:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:40,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 02:56:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,632 INFO L225 Difference]: With dead ends: 27 [2020-11-28 02:56:40,632 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 02:56:40,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 02:56:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 02:56:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 02:56:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-28 02:56:40,641 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 17 [2020-11-28 02:56:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,642 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-28 02:56:40,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-28 02:56:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:40,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:40,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:40,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -321005681, now seen corresponding path program 1 times [2020-11-28 02:56:40,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719068793] [2020-11-28 02:56:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,864 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:40,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673693200] [2020-11-28 02:56:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:41,012 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:41,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:56:41,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719068793] [2020-11-28 02:56:41,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:41,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673693200] [2020-11-28 02:56:41,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:41,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599138934] [2020-11-28 02:56:41,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:41,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:41,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:41,061 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 5 states. [2020-11-28 02:56:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:45,283 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-28 02:56:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:45,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:56:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:45,287 INFO L225 Difference]: With dead ends: 18 [2020-11-28 02:56:45,287 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:45,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:45,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:56:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:45,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:45,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:45,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:45,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:45,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:56:45,744 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-11-28 02:56:46,256 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-28 02:56:46,258 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 02:56:46,258 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-28 02:56:46,258 INFO L270 CegarLoopResult]: At program point L15-1(lines 39 40) 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 2))) (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (and (<= 2 ULTIMATE.start_main_~c~0) .cse0 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) .cse1 .cse2 .cse3))) [2020-11-28 02:56:46,258 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 45) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 0 ULTIMATE.start_main_~k~0)) (.cse3 (<= ULTIMATE.start_main_~k~0 2)) (.cse4 (= ULTIMATE.start_main_~az~0 .cse0))) (or (and (<= 2 ULTIMATE.start_main_~c~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 .cse0)) .cse1 .cse2 .cse3 .cse4) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 1) .cse1 .cse2 .cse3 .cse4)))) [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point L36-3(lines 36 45) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:56:46,259 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:56:46,260 INFO L277 CegarLoopResult]: At program point L47(lines 21 48) the Hoare annotation is: true [2020-11-28 02:56:46,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:46 BoogieIcfgContainer [2020-11-28 02:56:46,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:46,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:46,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:46,281 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:46,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:36" (3/4) ... [2020-11-28 02:56:46,285 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:46,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 02:56:46,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:46,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:46,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:46,340 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3466040e-929b-440e-88de-33e82dc0f5d1/bin/uautomizer/witness.graphml [2020-11-28 02:56:46,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:46,341 INFO L168 Benchmark]: Toolchain (without parser) took 10373.75 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 98.9 MB in the beginning and 126.1 MB in the end (delta: -27.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,342 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:46,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.70 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 104.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 127.9 MB. Free memory was 104.3 MB in the beginning and 102.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,344 INFO L168 Benchmark]: Boogie Preprocessor took 20.44 ms. Allocated memory is still 127.9 MB. Free memory was 102.6 MB in the beginning and 101.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:46,344 INFO L168 Benchmark]: RCFGBuilder took 311.15 ms. Allocated memory is still 127.9 MB. Free memory was 101.5 MB in the beginning and 88.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,345 INFO L168 Benchmark]: TraceAbstraction took 9683.16 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 87.9 MB in the beginning and 129.2 MB in the end (delta: -41.3 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,346 INFO L168 Benchmark]: Witness Printer took 59.06 ms. Allocated memory is still 163.6 MB. Free memory was 129.2 MB in the beginning and 126.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:46,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory is still 46.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.70 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 104.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 127.9 MB. Free memory was 104.3 MB in the beginning and 102.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.44 ms. Allocated memory is still 127.9 MB. Free memory was 102.6 MB in the beginning and 101.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 311.15 ms. Allocated memory is still 127.9 MB. Free memory was 101.5 MB in the beginning and 88.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9683.16 ms. Allocated memory was 127.9 MB in the beginning and 163.6 MB in the end (delta: 35.7 MB). Free memory was 87.9 MB in the beginning and 129.2 MB in the end (delta: -41.3 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. * Witness Printer took 59.06 ms. Allocated memory is still 163.6 MB. Free memory was 129.2 MB in the beginning and 126.1 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: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((2 <= c && 1 == cond) && z == y) && x == a + a * z) && cond == 1) && 0 <= k) && k <= 2) && az == a * z) || ((((((a == x && 1 <= c) && y == 1) && cond == 1) && 0 <= k) && k <= 2) && az == a * z) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a == x && 1 == cond) && 1 <= c) && y == 1) && cond == 1) && 0 <= k) && k <= 2) && az == a * z) || (((((2 <= c && 1 == cond) && z * x + a == az * y + x) && cond == 1) && 0 <= k) && k <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 36 SDslu, 84 SDs, 0 SdLazy, 59 SolverSat, 14 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 113 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 3844 SizeOfPredicates, 28 NumberOfNonLiveVariables, 346 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 10/12 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...