./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound2.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_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 74b355ae3def4f61c1c4b906d0641f40f24a4b28 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:25:40,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:25:40,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:25:40,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:25:40,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:25:40,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:25:40,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:25:40,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:25:40,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:25:40,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:25:40,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:25:40,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:25:40,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:25:40,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:25:40,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:25:40,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:25:40,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:25:40,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:25:40,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:25:40,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:25:40,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:25:40,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:25:40,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:25:40,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:25:40,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:25:40,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:25:40,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:25:40,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:25:40,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:25:40,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:25:40,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:25:40,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:25:40,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:25:40,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:25:40,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:25:40,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:25:40,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:25:40,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:25:40,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:25:40,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:25:40,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:25:40,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:25:40,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:25:40,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:25:40,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:25:40,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:25:40,348 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:25:40,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:25:40,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:25:40,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:25:40,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:25:40,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:25:40,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:25:40,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:25:40,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:25:40,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:25:40,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:25:40,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:25:40,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:25:40,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:25:40,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:25:40,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:25:40,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:25:40,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:25:40,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:25:40,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:25:40,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:25:40,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:25:40,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:25:40,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:25:40,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:25:40,364 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_55809923-1102-4c62-8090-da7f97b1d8fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74b355ae3def4f61c1c4b906d0641f40f24a4b28 [2020-11-29 18:25:40,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:25:40,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:25:40,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:25:40,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:25:40,714 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:25:40,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound2.c [2020-11-29 18:25:40,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/data/e52b3d037/1f7c8e62ad2a455a85c79100275c612f/FLAG330fb5858 [2020-11-29 18:25:41,355 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:25:41,355 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound2.c [2020-11-29 18:25:41,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/data/e52b3d037/1f7c8e62ad2a455a85c79100275c612f/FLAG330fb5858 [2020-11-29 18:25:41,760 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/data/e52b3d037/1f7c8e62ad2a455a85c79100275c612f [2020-11-29 18:25:41,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:25:41,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:25:41,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:41,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:25:41,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:25:41,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:41" (1/1) ... [2020-11-29 18:25:41,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ae5d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:41, skipping insertion in model container [2020-11-29 18:25:41,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:41" (1/1) ... [2020-11-29 18:25:41,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:25:41,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:25:41,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:42,008 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:25:42,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:42,048 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:25:42,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42 WrapperNode [2020-11-29 18:25:42,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:42,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:42,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:25:42,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:25:42,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:42,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:25:42,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:25:42,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:25:42,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... [2020-11-29 18:25:42,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:25:42,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:25:42,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:25:42,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:25:42,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 18:25:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:25:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:25:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:25:42,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:25:42,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:25:42,471 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 18:25:42,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:42 BoogieIcfgContainer [2020-11-29 18:25:42,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:25:42,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:25:42,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:25:42,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:25:42,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:25:41" (1/3) ... [2020-11-29 18:25:42,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7b472c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:42, skipping insertion in model container [2020-11-29 18:25:42,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:42" (2/3) ... [2020-11-29 18:25:42,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7b472c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:42, skipping insertion in model container [2020-11-29 18:25:42,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:42" (3/3) ... [2020-11-29 18:25:42,529 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound2.c [2020-11-29 18:25:42,542 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:25:42,559 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 18:25:42,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 18:25:42,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:25:42,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:25:42,633 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:25:42,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:25:42,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:25:42,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:25:42,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:25:42,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:25:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 18:25:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 18:25:42,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:42,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:25:42,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 18:25:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:42,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606395620] [2020-11-29 18:25:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:42,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:42,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130882731] [2020-11-29 18:25:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 18:25:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:42,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:25:42,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:43,051 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 18:25:43,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606395620] [2020-11-29 18:25:43,052 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:43,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130882731] [2020-11-29 18:25:43,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:43,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:25:43,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150796314] [2020-11-29 18:25:43,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:25:43,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:43,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:25:43,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:25:43,086 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-29 18:25:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:43,200 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-29 18:25:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:25:43,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 18:25:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:43,216 INFO L225 Difference]: With dead ends: 44 [2020-11-29 18:25:43,216 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 18:25:43,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:25:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 18:25:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-11-29 18:25:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 18:25:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 18:25:43,263 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-11-29 18:25:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:43,263 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 18:25:43,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:25:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 18:25:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:25:43,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:43,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:43,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-29 18:25:43,491 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:43,493 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-29 18:25:43,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:43,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15779602] [2020-11-29 18:25:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:43,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:43,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644852638] [2020-11-29 18:25:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 18:25:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:43,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 18:25:43,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:43,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15779602] [2020-11-29 18:25:43,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:43,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644852638] [2020-11-29 18:25:43,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:43,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 18:25:43,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525978876] [2020-11-29 18:25:43,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:25:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:25:43,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:25:43,750 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-11-29 18:25:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:43,869 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-29 18:25:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:43,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 18:25:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:43,873 INFO L225 Difference]: With dead ends: 29 [2020-11-29 18:25:43,873 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:25:43,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:25:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:25:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-29 18:25:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 18:25:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-29 18:25:43,881 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-29 18:25:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:43,881 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-29 18:25:43,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:25:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-29 18:25:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:25:43,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:43,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 18:25:44,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:44,097 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash 542015330, now seen corresponding path program 2 times [2020-11-29 18:25:44,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:44,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607318499] [2020-11-29 18:25:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:44,118 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:44,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634887781] [2020-11-29 18:25:44,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 18:25:44,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 18:25:44,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 18:25:44,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:25:44,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:44,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607318499] [2020-11-29 18:25:44,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:44,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634887781] [2020-11-29 18:25:44,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:44,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 18:25:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506558256] [2020-11-29 18:25:44,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:44,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:44,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:44,291 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-11-29 18:25:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:44,441 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-29 18:25:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:44,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-29 18:25:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:44,443 INFO L225 Difference]: With dead ends: 26 [2020-11-29 18:25:44,443 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 18:25:44,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:25:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 18:25:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 18:25:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 18:25:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-29 18:25:44,449 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-29 18:25:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:44,449 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-29 18:25:44,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-29 18:25:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:25:44,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:44,451 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:44,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:25:44,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -377436604, now seen corresponding path program 1 times [2020-11-29 18:25:44,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:25:44,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864430045] [2020-11-29 18:25:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:25:44,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 18:25:44,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15615334] [2020-11-29 18:25:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/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 18:25:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:44,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 18:25:44,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:46,865 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 18:25:46,873 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 18:25:46,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:25:51,964 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 18:25:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-11-29 18:25:52,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864430045] [2020-11-29 18:25:52,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 18:25:52,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15615334] [2020-11-29 18:25:52,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 18:25:52,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 18:25:52,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207582173] [2020-11-29 18:25:52,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:25:52,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:25:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:25:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 18:25:52,098 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 8 states. [2020-11-29 18:26:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:26:07,796 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-29 18:26:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 18:26:07,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 18:26:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:26:07,797 INFO L225 Difference]: With dead ends: 16 [2020-11-29 18:26:07,797 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:26:07,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=26, Invalid=65, Unknown=3, NotChecked=16, Total=110 [2020-11-29 18:26:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:26:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:26:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:26:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:26:07,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-29 18:26:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:26:07,799 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:26:07,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:26:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:26:07,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:26:08,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:26:08,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:26:08,221 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 18:26:13,008 WARN L193 SmtUtils]: Spent 4.75 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 18:26:13,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:26:13,011 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:26:13,011 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:26:13,011 INFO L270 CegarLoopResult]: At program point L15-1(lines 37 38) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~x~0 1) .cse0 (= ULTIMATE.start_main_~y~0 1)) (and (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) .cse0 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 2 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2020-11-29 18:26:13,011 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 18:26:13,011 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-29 18:26:13,011 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (and (<= 1 ~counter~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_~z~0 1))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 1) (<= 0 ~counter~0)) (let ((.cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (and (= ULTIMATE.start_main_~x~0 (+ .cse0 ULTIMATE.start_main_~z~0 1)) (= .cse0 ULTIMATE.start_main_~y~0) (<= 2 ~counter~0)))) [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:26:13,012 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 18:26:13,013 INFO L277 CegarLoopResult]: At program point L45(lines 24 46) the Hoare annotation is: true [2020-11-29 18:26:13,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:26:13 BoogieIcfgContainer [2020-11-29 18:26:13,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:26:13,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:26:13,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:26:13,062 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:26:13,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:42" (3/4) ... [2020-11-29 18:26:13,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:26:13,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-29 18:26:13,091 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:26:13,092 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:26:13,092 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:26:13,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_55809923-1102-4c62-8090-da7f97b1d8fd/bin/uautomizer/witness.graphml [2020-11-29 18:26:13,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:26:13,141 INFO L168 Benchmark]: Toolchain (without parser) took 31372.58 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 43.1 MB in the end (delta: 31.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,142 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:26:13,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.47 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 65.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.45 ms. Allocated memory is still 102.8 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:26:13,145 INFO L168 Benchmark]: Boogie Preprocessor took 24.42 ms. Allocated memory is still 102.8 MB. Free memory was 63.6 MB in the beginning and 62.6 MB in the end (delta: 994.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,146 INFO L168 Benchmark]: RCFGBuilder took 354.06 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 51.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,147 INFO L168 Benchmark]: TraceAbstraction took 30551.78 ms. Allocated memory is still 102.8 MB. Free memory was 81.3 MB in the beginning and 45.8 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,148 INFO L168 Benchmark]: Witness Printer took 78.98 ms. Allocated memory is still 102.8 MB. Free memory was 45.8 MB in the beginning and 43.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:26:13,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.47 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 65.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.45 ms. Allocated memory is still 102.8 MB. Free memory was 65.1 MB in the beginning and 63.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.42 ms. Allocated memory is still 102.8 MB. Free memory was 63.6 MB in the beginning and 62.6 MB in the end (delta: 994.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 354.06 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 51.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30551.78 ms. Allocated memory is still 102.8 MB. Free memory was 81.3 MB in the beginning and 45.8 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * Witness Printer took 78.98 ms. Allocated memory is still 102.8 MB. Free memory was 45.8 MB in the beginning and 43.1 MB in the end (delta: 2.7 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: 34]: Loop Invariant Derived loop invariant: ((((1 <= counter && 1 <= cond) && z == y) && x == z + 1) || ((x == 1 && y == 1) && 0 <= counter)) || ((x == z * z + z + 1 && z * z == y) && 2 <= counter) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((1 <= counter && x == 1) && 1 <= cond) && y == 1) || ((((z * x + 1 == x + z * y && 1 <= cond) && z == y) && 2 <= counter) && x == z + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 36 SDslu, 79 SDs, 0 SdLazy, 71 SolverSat, 15 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 85 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 3165 SizeOfPredicates, 19 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 8/21 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...