./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.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_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/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 66ce5a69168fe118e2caa0a99f2b1d5c3f1a2a1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:25:03,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:25:03,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:25:03,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:25:03,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:25:03,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:25:03,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:25:03,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:25:03,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:25:03,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:25:03,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:25:03,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:25:03,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:25:03,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:25:03,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:25:03,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:25:03,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:25:03,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:25:03,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:25:03,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:25:03,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:25:03,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:25:03,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:25:03,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:25:03,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:25:03,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:25:03,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:25:03,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:25:03,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:25:03,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:25:03,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:25:03,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:25:03,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:25:03,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:25:03,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:25:03,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:25:03,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:25:03,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:25:03,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:25:03,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:25:03,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:25:03,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:25:03,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:25:03,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:25:03,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:25:03,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:25:03,810 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:25:03,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:25:03,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:25:03,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:25:03,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:25:03,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:25:03,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:25:03,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:25:03,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:25:03,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:25:03,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:25:03,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:25:03,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:25:03,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:25:03,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:25:03,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:25:03,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:25:03,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:25:03,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:25:03,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:25:03,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:25:03,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:25:03,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:25:03,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:25:03,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:25:03,817 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_2ffa6874-638b-4035-90e5-420e88f69799/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66ce5a69168fe118e2caa0a99f2b1d5c3f1a2a1d [2020-11-29 20:25:04,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:25:04,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:25:04,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:25:04,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:25:04,235 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:25:04,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c [2020-11-29 20:25:04,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/data/c50e4784c/975b571183934e99be5c312e03f6fc5a/FLAGacb234c04 [2020-11-29 20:25:04,892 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:25:04,892 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound50.c [2020-11-29 20:25:04,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/data/c50e4784c/975b571183934e99be5c312e03f6fc5a/FLAGacb234c04 [2020-11-29 20:25:05,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/data/c50e4784c/975b571183934e99be5c312e03f6fc5a [2020-11-29 20:25:05,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:25:05,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:25:05,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:25:05,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:25:05,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:25:05,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642b516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05, skipping insertion in model container [2020-11-29 20:25:05,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:25:05,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:25:05,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:25:05,579 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:25:05,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:25:05,621 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:25:05,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05 WrapperNode [2020-11-29 20:25:05,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:25:05,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:25:05,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:25:05,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:25:05,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:25:05,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:25:05,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:25:05,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:25:05,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... [2020-11-29 20:25:05,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:25:05,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:25:05,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:25:05,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:25:05,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:25:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:25:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:25:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:25:05,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:25:06,147 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:25:06,147 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 20:25:06,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:25:06 BoogieIcfgContainer [2020-11-29 20:25:06,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:25:06,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:25:06,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:25:06,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:25:06,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:25:05" (1/3) ... [2020-11-29 20:25:06,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd16d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:25:06, skipping insertion in model container [2020-11-29 20:25:06,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:25:05" (2/3) ... [2020-11-29 20:25:06,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd16d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:25:06, skipping insertion in model container [2020-11-29 20:25:06,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:25:06" (3/3) ... [2020-11-29 20:25:06,159 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound50.c [2020-11-29 20:25:06,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:25:06,177 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:25:06,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:25:06,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:25:06,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:25:06,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:25:06,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:25:06,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:25:06,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:25:06,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:25:06,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:25:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 20:25:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:25:06,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:06,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:06,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-11-29 20:25:06,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711529152] [2020-11-29 20:25:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:25:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:25:06,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711529152] [2020-11-29 20:25:06,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:25:06,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:25:06,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060917394] [2020-11-29 20:25:06,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:25:06,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:06,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:25:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:25:06,495 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 20:25:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:25:06,511 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-11-29 20:25:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:25:06,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:25:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:25:06,522 INFO L225 Difference]: With dead ends: 35 [2020-11-29 20:25:06,523 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 20:25:06,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:25:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 20:25:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 20:25:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 20:25:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 20:25:06,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-11-29 20:25:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:25:06,584 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 20:25:06,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:25:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 20:25:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:25:06,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:06,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:06,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:25:06,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-11-29 20:25:06,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:06,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335603481] [2020-11-29 20:25:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:06,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:25:06,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294747369] [2020-11-29 20:25:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:25:06,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:25:06,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:25:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:25:06,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335603481] [2020-11-29 20:25:06,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:25:06,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294747369] [2020-11-29 20:25:06,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:25:06,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:25:06,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012858876] [2020-11-29 20:25:06,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:25:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:25:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:25:06,906 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-29 20:25:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:25:07,013 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-29 20:25:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:25:07,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 20:25:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:25:07,017 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:25:07,018 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:25:07,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:25:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:25:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-29 20:25:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:25:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-29 20:25:07,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-11-29 20:25:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:25:07,025 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-29 20:25:07,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:25:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-29 20:25:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:25:07,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:07,028 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:07,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:25:07,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:07,252 INFO L82 PathProgramCache]: Analyzing trace with hash 637918818, now seen corresponding path program 1 times [2020-11-29 20:25:07,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:07,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721419197] [2020-11-29 20:25:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:07,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:25:07,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951071816] [2020-11-29 20:25:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:25:07,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 20:25:07,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:25:07,434 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 20:25:07,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:07,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:07,701 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:25:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:25:07,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721419197] [2020-11-29 20:25:07,753 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:25:07,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951071816] [2020-11-29 20:25:07,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:25:07,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:25:07,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213177174] [2020-11-29 20:25:07,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:25:07,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:07,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:25:07,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:25:07,758 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 9 states. [2020-11-29 20:25:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:25:08,940 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-29 20:25:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:25:08,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-29 20:25:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:25:08,943 INFO L225 Difference]: With dead ends: 28 [2020-11-29 20:25:08,944 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 20:25:08,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:25:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 20:25:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-29 20:25:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 20:25:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-29 20:25:08,949 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-11-29 20:25:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:25:08,949 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-29 20:25:08,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:25:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-29 20:25:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:25:08,950 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:08,950 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:09,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:09,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash -984884012, now seen corresponding path program 2 times [2020-11-29 20:25:09,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:09,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349201190] [2020-11-29 20:25:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:09,183 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:25:09,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115304168] [2020-11-29 20:25:09,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:09,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:25:09,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:25:09,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 20:25:09,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:25:11,353 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~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_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1))) is different from false [2020-11-29 20:25:11,386 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:25:11,387 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:15,469 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 20:25:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 20:25:15,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349201190] [2020-11-29 20:25:15,622 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:25:15,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115304168] [2020-11-29 20:25:15,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:25:15,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 20:25:15,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232389570] [2020-11-29 20:25:15,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:25:15,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:15,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:25:15,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 20:25:15,625 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-11-29 20:25:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:25:29,458 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-29 20:25:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:25:29,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 20:25:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:25:29,460 INFO L225 Difference]: With dead ends: 31 [2020-11-29 20:25:29,460 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 20:25:29,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=65, Unknown=3, NotChecked=16, Total=110 [2020-11-29 20:25:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 20:25:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2020-11-29 20:25:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 20:25:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-29 20:25:29,469 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 15 [2020-11-29 20:25:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:25:29,469 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-29 20:25:29,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:25:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-29 20:25:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:25:29,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:29,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:29,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:29,675 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:29,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1752148488, now seen corresponding path program 1 times [2020-11-29 20:25:29,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:29,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108330261] [2020-11-29 20:25:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:29,701 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:25:29,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015091510] [2020-11-29 20:25:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/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 20:25:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:25:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:25:29,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:25:29,804 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:25:29,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:29,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:25:29,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108330261] [2020-11-29 20:25:29,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:25:29,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015091510] [2020-11-29 20:25:29,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:25:29,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:25:29,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001914820] [2020-11-29 20:25:29,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:25:29,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:29,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:25:29,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:25:29,917 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2020-11-29 20:25:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:25:34,170 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-29 20:25:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:25:34,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 20:25:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:25:34,172 INFO L225 Difference]: With dead ends: 23 [2020-11-29 20:25:34,172 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:25:34,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 20:25:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:25:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 20:25:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:25:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-29 20:25:34,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-11-29 20:25:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:25:34,179 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-29 20:25:34,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:25:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-29 20:25:34,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:25:34,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:25:34,180 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:25:34,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:25:34,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:25:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:25:34,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1752108766, now seen corresponding path program 3 times [2020-11-29 20:25:34,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:25:34,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716301792] [2020-11-29 20:25:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:25:34,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:25:34,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201165384] [2020-11-29 20:25:34,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/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 20:25:34,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 20:25:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:25:34,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 20:25:34,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:25:34,696 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2020-11-29 20:25:35,362 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 20:25:35,366 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:25:35,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:36,860 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 20:25:44,383 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-11-29 20:25:44,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:44,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:25:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:25:44,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716301792] [2020-11-29 20:25:44,527 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:25:44,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201165384] [2020-11-29 20:25:44,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:25:44,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:25:44,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636496576] [2020-11-29 20:25:44,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:25:44,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:25:44,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:25:44,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2020-11-29 20:25:44,530 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-11-29 20:25:49,326 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 20:25:55,565 WARN L193 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 20:26:01,653 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 20:27:05,508 WARN L193 SmtUtils]: Spent 1.06 m on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-11-29 20:27:50,864 WARN L193 SmtUtils]: Spent 44.89 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-29 20:27:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:27:55,198 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 20:27:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:27:55,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-29 20:27:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:27:55,200 INFO L225 Difference]: With dead ends: 19 [2020-11-29 20:27:55,200 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:27:55,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.7s TimeCoverageRelationStatistics Valid=52, Invalid=79, Unknown=1, NotChecked=0, Total=132 [2020-11-29 20:27:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:27:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:27:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:27:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:27:55,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 20:27:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:27:55,201 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:27:55,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:27:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:27:55,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:27:55,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 20:27:55,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:28:16,253 WARN L193 SmtUtils]: Spent 20.75 s on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-11-29 20:30:08,591 WARN L193 SmtUtils]: Spent 1.87 m on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-29 20:30:08,595 INFO L270 CegarLoopResult]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= ULTIMATE.start_main_~z~0 50)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 1) .cse2) (and .cse0 .cse1 .cse3 .cse2 (let ((.cse4 (= ULTIMATE.start_main_~z~0 0))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse4) (let ((.cse6 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse5 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (mod .cse6 ULTIMATE.start_main_~z~0) 0) (let ((.cse7 (div .cse5 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 .cse6) .cse7) (+ (* .cse7 ULTIMATE.start_main_~z~0) 1))) (not .cse4)))))) (and .cse0 .cse1 .cse3 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2020-11-29 20:30:08,595 INFO L274 CegarLoopResult]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2020-11-29 20:30:08,595 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:30:08,595 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L270 CegarLoopResult]: At program point L15-1(lines 38 39) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= ULTIMATE.start_main_~z~0 50)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~y~0 1) .cse4) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse3 .cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))) (let ((.cse6 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse5 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) .cse1 .cse2 (= (mod .cse6 ULTIMATE.start_main_~z~0) 0) (let ((.cse7 (div .cse5 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 .cse6) .cse7) (+ (* .cse7 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)) .cse3 .cse4)))) [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:30:08,596 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:30:08,597 INFO L277 CegarLoopResult]: At program point L46(lines 23 47) the Hoare annotation is: true [2020-11-29 20:30:08,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:30:08 BoogieIcfgContainer [2020-11-29 20:30:08,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:30:08,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:30:08,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:30:08,623 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:30:08,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:25:06" (3/4) ... [2020-11-29 20:30:08,628 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:30:08,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 20:30:08,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:30:08,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:30:08,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:30:08,694 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2ffa6874-638b-4035-90e5-420e88f69799/bin/uautomizer/witness.graphml [2020-11-29 20:30:08,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:30:08,696 INFO L168 Benchmark]: Toolchain (without parser) took 303410.68 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.1 MB in the beginning and 57.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,697 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:30:08,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.92 ms. Allocated memory is still 90.2 MB. Free memory was 58.9 MB in the beginning and 68.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 66.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,708 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:30:08,709 INFO L168 Benchmark]: RCFGBuilder took 455.02 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 53.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,709 INFO L168 Benchmark]: TraceAbstraction took 302471.23 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 60.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,710 INFO L168 Benchmark]: Witness Printer took 71.84 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:30:08,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.92 ms. Allocated memory is still 90.2 MB. Free memory was 58.9 MB in the beginning and 68.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 66.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 90.2 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.02 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 53.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 302471.23 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 60.4 MB in the end (delta: -7.5 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.84 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 57.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 35]: Loop Invariant Derived loop invariant: (((((0 <= z && z <= 50) && x == 1) && y == 1) && cond == 1) || ((((0 <= z && z <= 50) && 1 == cond) && cond == 1) && ((y == 0 && z == 0) || ((((y % z == 0 && (x + -1) % z == 0) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0))))) || (((((0 <= z && z <= 50) && 1 == cond) && z == y) && cond == 1) && x == z + 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((0 <= z && z <= 50) && 1 == cond) && z * y + x == z * x + 1) && y == 1) && cond == 1) || ((((((0 <= z && z <= 50) && 1 == cond) && z == y) && z * y + x == z * x + 1) && cond == 1) && x == z + 1)) || (((((((((0 <= z && y % z == 0) && (x + -1) % z == 0) && z <= 50) && 1 == cond) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) && z * y + x == z * x + 1) && cond == 1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 169.1s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 150.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 133.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 80 SDslu, 115 SDs, 0 SdLazy, 129 SolverSat, 42 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 29.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 136.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 234 HoareAnnotationTreeSize, 4 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 142 FormulaSimplificationTreeSizeReductionInter, 133.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 81 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 6845 SizeOfPredicates, 38 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 23/33 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...