./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.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_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/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 dac7e437197a3948d916763ae4622f6f32af8f4d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:10:26,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:10:26,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:10:26,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:10:26,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:10:26,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:10:26,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:10:26,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:10:26,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:10:27,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:10:27,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:10:27,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:10:27,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:10:27,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:10:27,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:10:27,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:10:27,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:10:27,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:10:27,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:10:27,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:10:27,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:10:27,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:10:27,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:10:27,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:10:27,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:10:27,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:10:27,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:10:27,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:10:27,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:10:27,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:10:27,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:10:27,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:10:27,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:10:27,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:10:27,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:10:27,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:10:27,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:10:27,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:10:27,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:10:27,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:10:27,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:10:27,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:10:27,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:10:27,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:10:27,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:10:27,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:10:27,110 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:10:27,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:10:27,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:10:27,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:10:27,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:10:27,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:10:27,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:10:27,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:10:27,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:10:27,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:10:27,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:10:27,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:10:27,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:10:27,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:10:27,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:10:27,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:10:27,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:10:27,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:10:27,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:10:27,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:10:27,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:10:27,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:10:27,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:10:27,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:10:27,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:10:27,118 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_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac7e437197a3948d916763ae4622f6f32af8f4d [2020-11-30 01:10:27,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:10:27,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:10:27,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:10:27,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:10:27,457 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:10:27,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c [2020-11-30 01:10:27,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/data/e33173afd/2b7af86c2c504c1a806d374ccb4a5dce/FLAGd8770b565 [2020-11-30 01:10:27,994 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:10:27,995 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c [2020-11-30 01:10:28,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/data/e33173afd/2b7af86c2c504c1a806d374ccb4a5dce/FLAGd8770b565 [2020-11-30 01:10:28,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/data/e33173afd/2b7af86c2c504c1a806d374ccb4a5dce [2020-11-30 01:10:28,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:10:28,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:10:28,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:28,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:10:28,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:10:28,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7569536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28, skipping insertion in model container [2020-11-30 01:10:28,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:10:28,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:10:28,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:28,605 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:10:28,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:28,636 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:10:28,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28 WrapperNode [2020-11-30 01:10:28,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:28,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:28,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:10:28,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:10:28,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:28,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:10:28,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:10:28,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:10:28,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... [2020-11-30 01:10:28,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:10:28,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:10:28,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:10:28,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:10:28,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:10:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:10:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:10:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:10:28,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:10:29,173 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:10:29,174 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 01:10:29,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:29 BoogieIcfgContainer [2020-11-30 01:10:29,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:10:29,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:10:29,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:10:29,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:10:29,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:10:28" (1/3) ... [2020-11-30 01:10:29,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322c843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:10:29, skipping insertion in model container [2020-11-30 01:10:29,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:28" (2/3) ... [2020-11-30 01:10:29,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322c843b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:10:29, skipping insertion in model container [2020-11-30 01:10:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:29" (3/3) ... [2020-11-30 01:10:29,201 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound50.c [2020-11-30 01:10:29,222 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:10:29,227 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:10:29,236 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:10:29,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:10:29,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:10:29,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:10:29,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:10:29,259 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:10:29,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:10:29,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:10:29,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:10:29,273 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 01:10:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:10:29,278 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:29,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:29,280 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:29,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-30 01:10:29,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:29,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513663752] [2020-11-30 01:10:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:29,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513663752] [2020-11-30 01:10:29,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:29,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:10:29,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321330919] [2020-11-30 01:10:29,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:10:29,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:10:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:10:29,454 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-30 01:10:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:29,473 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-11-30 01:10:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:10:29,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:10:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:10:29,483 INFO L225 Difference]: With dead ends: 37 [2020-11-30 01:10:29,484 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:10:29,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:10:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:10:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:10:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:10:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 01:10:29,553 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2020-11-30 01:10:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:10:29,553 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 01:10:29,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:10:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 01:10:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:10:29,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:29,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:29,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:10:29,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-30 01:10:29,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950580872] [2020-11-30 01:10:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:29,582 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:10:29,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919205939] [2020-11-30 01:10:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:29,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:10:29,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:29,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950580872] [2020-11-30 01:10:29,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:10:29,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919205939] [2020-11-30 01:10:29,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:29,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:10:29,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376081480] [2020-11-30 01:10:29,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:10:29,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:29,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:10:29,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:10:29,780 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-11-30 01:10:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:29,881 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-30 01:10:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:10:29,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 01:10:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:10:29,883 INFO L225 Difference]: With dead ends: 30 [2020-11-30 01:10:29,883 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:10:29,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:10:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:10:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-30 01:10:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:10:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-30 01:10:29,889 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-30 01:10:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:10:29,890 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-30 01:10:29,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:10:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-30 01:10:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:10:29,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:29,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:30,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:10:30,092 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1811972666, now seen corresponding path program 1 times [2020-11-30 01:10:30,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:30,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125950883] [2020-11-30 01:10:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:30,125 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:10:30,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119706417] [2020-11-30 01:10:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:30,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 01:10:30,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:30,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125950883] [2020-11-30 01:10:30,299 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:10:30,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119706417] [2020-11-30 01:10:30,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:10:30,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:10:30,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174477075] [2020-11-30 01:10:30,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:10:30,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:30,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:10:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:10:30,302 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-30 01:10:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:32,466 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-30 01:10:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:10:32,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 01:10:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:10:32,467 INFO L225 Difference]: With dead ends: 30 [2020-11-30 01:10:32,467 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 01:10:32,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:10:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 01:10:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-30 01:10:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:10:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-30 01:10:32,473 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-11-30 01:10:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:10:32,474 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-30 01:10:32,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:10:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-30 01:10:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:10:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:32,475 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:32,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:32,681 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:32,683 INFO L82 PathProgramCache]: Analyzing trace with hash 336535162, now seen corresponding path program 1 times [2020-11-30 01:10:32,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:32,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785435496] [2020-11-30 01:10:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:32,712 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:10:32,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875066679] [2020-11-30 01:10:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:32,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:10:32,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:32,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785435496] [2020-11-30 01:10:32,864 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:10:32,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875066679] [2020-11-30 01:10:32,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:10:32,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-30 01:10:32,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220634717] [2020-11-30 01:10:32,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:10:32,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:10:32,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:10:32,867 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-11-30 01:10:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:33,009 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-30 01:10:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:10:33,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 01:10:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:10:33,011 INFO L225 Difference]: With dead ends: 27 [2020-11-30 01:10:33,011 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:10:33,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:10:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:10:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:10:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:10:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-30 01:10:33,016 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-11-30 01:10:33,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:10:33,016 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-30 01:10:33,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:10:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-30 01:10:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:10:33,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:33,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:33,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:33,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1334571699, now seen corresponding path program 1 times [2020-11-30 01:10:33,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:33,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35344462] [2020-11-30 01:10:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:33,253 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:10:33,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975362932] [2020-11-30 01:10:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/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 [2020-11-30 01:10:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:10:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:33,367 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:10:33,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:10:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:10:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35344462] [2020-11-30 01:10:33,462 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:10:33,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975362932] [2020-11-30 01:10:33,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:10:33,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:10:33,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837925775] [2020-11-30 01:10:33,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:10:33,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:33,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:10:33,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:10:33,464 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-30 01:10:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:10:37,630 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-30 01:10:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:10:37,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 01:10:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:10:37,634 INFO L225 Difference]: With dead ends: 27 [2020-11-30 01:10:37,634 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:10:37,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:10:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:10:37,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:10:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:10:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-30 01:10:37,639 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-11-30 01:10:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:10:37,639 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-30 01:10:37,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:10:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-30 01:10:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:10:37,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:10:37,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:10:37,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:10:37,844 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:10:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:37,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1576870778, now seen corresponding path program 2 times [2020-11-30 01:10:37,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:10:37,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635490714] [2020-11-30 01:10:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:10:37,883 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:10:37,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131939578] [2020-11-30 01:10:37,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/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 [2020-11-30 01:10:37,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:10:37,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:10:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-30 01:10:37,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:10:37,982 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:10:37,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:10:40,099 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)) (<= 1 c_ULTIMATE.start_main_~z~0)) is different from false [2020-11-30 01:10:40,107 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:10:40,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:10:46,250 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 01:10:46,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:10:46,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:10:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-30 01:10:46,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635490714] [2020-11-30 01:10:46,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:10:46,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131939578] [2020-11-30 01:10:46,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:10:46,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-30 01:10:46,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877288391] [2020-11-30 01:10:46,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:10:46,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:10:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:10:46,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=52, Unknown=2, NotChecked=14, Total=90 [2020-11-30 01:10:46,412 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-30 01:11:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:11:02,868 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-30 01:11:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:11:02,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-30 01:11:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:11:02,871 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:11:02,871 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 01:11:02,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=48, Invalid=135, Unknown=3, NotChecked=24, Total=210 [2020-11-30 01:11:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 01:11:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-30 01:11:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 01:11:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 01:11:02,879 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2020-11-30 01:11:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:11:02,880 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 01:11:02,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:11:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 01:11:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:11:02,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:11:02,881 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:11:03,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 01:11:03,089 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:11:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1638396498, now seen corresponding path program 2 times [2020-11-30 01:11:03,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:03,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077317617] [2020-11-30 01:11:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:03,103 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:11:03,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664319107] [2020-11-30 01:11:03,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:11:03,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:11:03,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:11:03,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:11:03,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:11:03,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077317617] [2020-11-30 01:11:03,259 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:11:03,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664319107] [2020-11-30 01:11:03,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:11:03,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:11:03,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023366816] [2020-11-30 01:11:03,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:11:03,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:11:03,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:11:03,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:11:03,261 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2020-11-30 01:11:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:11:03,433 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-30 01:11:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:11:03,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-30 01:11:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:11:03,438 INFO L225 Difference]: With dead ends: 31 [2020-11-30 01:11:03,438 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 01:11:03,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:11:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 01:11:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 01:11:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 01:11:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-30 01:11:03,448 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-11-30 01:11:03,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:11:03,448 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-30 01:11:03,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:11:03,448 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-30 01:11:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:11:03,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:11:03,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:11:03,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:11:03,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:11:03,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:11:03,669 INFO L82 PathProgramCache]: Analyzing trace with hash -8965934, now seen corresponding path program 3 times [2020-11-30 01:11:03,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:11:03,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235253670] [2020-11-30 01:11:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:11:03,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:11:03,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393672370] [2020-11-30 01:11:03,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:11:03,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 01:11:03,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:11:03,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:11:03,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:11:03,813 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:11:03,814 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:11:07,340 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 01:11:07,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:11:07,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:11:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:11:07,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235253670] [2020-11-30 01:11:07,620 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:11:07,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393672370] [2020-11-30 01:11:07,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:11:07,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:11:07,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589099495] [2020-11-30 01:11:07,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:11:07,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:11:07,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:11:07,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-30 01:11:07,622 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2020-11-30 01:11:21,651 WARN L193 SmtUtils]: Spent 13.07 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 01:11:37,558 WARN L193 SmtUtils]: Spent 15.77 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-30 01:11:42,034 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 01:12:01,355 WARN L193 SmtUtils]: Spent 18.95 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-30 01:12:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:05,768 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-30 01:12:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:12:05,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 01:12:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:05,781 INFO L225 Difference]: With dead ends: 27 [2020-11-30 01:12:05,781 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 01:12:05,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 53.2s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=1, NotChecked=0, Total=90 [2020-11-30 01:12:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 01:12:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-30 01:12:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 01:12:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-30 01:12:05,789 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2020-11-30 01:12:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:05,789 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-30 01:12:05,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:12:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-30 01:12:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:12:05,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:05,790 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:06,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:06,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:12:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:06,017 INFO L82 PathProgramCache]: Analyzing trace with hash -277986590, now seen corresponding path program 3 times [2020-11-30 01:12:06,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:06,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156143823] [2020-11-30 01:12:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:06,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:12:06,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883860137] [2020-11-30 01:12:06,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:12:06,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 01:12:06,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:12:06,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 01:12:06,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:12:06,131 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:12:06,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,643 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 01:12:11,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,680 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-30 01:12:11,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:11,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:12:17,619 WARN L193 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 01:12:31,333 WARN L193 SmtUtils]: Spent 13.71 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 01:12:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 01:12:33,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156143823] [2020-11-30 01:12:33,715 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:12:33,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883860137] [2020-11-30 01:12:33,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:33,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:12:33,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956787246] [2020-11-30 01:12:33,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:12:33,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:33,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:12:33,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:12:33,717 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-30 01:12:44,205 WARN L193 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 01:13:00,159 WARN L193 SmtUtils]: Spent 15.07 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-30 01:13:21,556 WARN L193 SmtUtils]: Spent 16.84 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-30 01:13:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:21,829 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 01:13:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:21,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 01:13:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:21,835 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:13:21,835 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:13:21,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:13:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:13:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:13:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:13:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:13:21,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-30 01:13:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:21,837 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:13:21,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:13:21,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:13:22,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 01:13:22,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:13:36,951 WARN L193 SmtUtils]: Spent 14.86 s on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-30 01:13:42,156 WARN L193 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-11-30 01:13:42,161 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse0) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0)))) [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:13:42,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L270 CegarLoopResult]: At program point L16-1(lines 38 39) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~z~0))) [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L277 CegarLoopResult]: At program point L50(lines 23 51) the Hoare annotation is: true [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-30 01:13:42,162 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-30 01:13:42,163 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2020-11-30 01:13:42,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:13:42 BoogieIcfgContainer [2020-11-30 01:13:42,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:13:42,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:42,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:42,181 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:42,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:29" (3/4) ... [2020-11-30 01:13:42,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:13:42,194 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 01:13:42,195 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:13:42,195 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:13:42,195 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:13:42,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f76970e7-aae4-46cb-b243-0ce76b4f4c2d/bin/uautomizer/witness.graphml [2020-11-30 01:13:42,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:42,234 INFO L168 Benchmark]: Toolchain (without parser) took 193845.02 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 58.3 MB in the beginning and 40.1 MB in the end (delta: 18.2 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,235 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 47.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:42,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.80 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 83.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.90 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,236 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:42,237 INFO L168 Benchmark]: RCFGBuilder took 474.67 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 67.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,237 INFO L168 Benchmark]: TraceAbstraction took 192991.07 ms. Allocated memory is still 104.9 MB. Free memory was 67.5 MB in the beginning and 43.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,238 INFO L168 Benchmark]: Witness Printer took 52.30 ms. Allocated memory is still 104.9 MB. Free memory was 43.3 MB in the beginning and 40.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:42,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 47.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.80 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 58.1 MB in the beginning and 83.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.90 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 474.67 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 67.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 192991.07 ms. Allocated memory is still 104.9 MB. Free memory was 67.5 MB in the beginning and 43.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. * Witness Printer took 52.30 ms. Allocated memory is still 104.9 MB. Free memory was 43.3 MB in the beginning and 40.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && z * x + 1 == x + y) && (x + -1) % z == 0) && 1 == cond) && 1 <= z - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((x == 1 && counter <= 0) && z == y) && 1 <= c) && 1 <= z) || ((((x + -1) / z * z + y == z + (x + -1) / z * z * z && (x + -1) % z == 0) && 1 <= cond) && 1 <= z) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 172.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 129.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 100 SDslu, 254 SDs, 0 SdLazy, 181 SolverSat, 34 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 33.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 113.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 96 HoareAnnotationTreeSize, 4 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 20.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 40.4s InterpolantComputationTime, 148 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 13901 SizeOfPredicates, 46 NumberOfNonLiveVariables, 719 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 42/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...