./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt --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 1bb8bbc0186703641a8371882b706e9ce5ba76a0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:55:35,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:55:35,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:55:35,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:55:35,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:55:35,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:55:35,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:55:35,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:55:35,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:55:35,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:55:35,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:55:35,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:55:35,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:55:35,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:55:35,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:55:35,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:55:35,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:55:35,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:55:35,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:55:35,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:55:35,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:55:35,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:55:35,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:55:35,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:55:35,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:55:35,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:55:35,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:55:35,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:55:35,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:55:35,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:55:35,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:55:35,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:55:35,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:55:35,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:55:35,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:55:35,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:55:35,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:55:35,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:55:35,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:55:35,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:55:35,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:55:35,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:55:35,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:55:35,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:55:35,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:55:35,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:55:35,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:55:35,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:55:35,511 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:55:35,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:55:35,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:55:35,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:55:35,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:55:35,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:55:35,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:55:35,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:55:35,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:55:35,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:55:35,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:55:35,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:55:35,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:55:35,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:55:35,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:55:35,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:55:35,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:55:35,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:55:35,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:55:35,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:55:35,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:55:35,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:55:35,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:55:35,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:55:35,519 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_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb8bbc0186703641a8371882b706e9ce5ba76a0 [2021-10-13 00:55:35,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:55:35,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:55:35,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:55:35,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:55:35,819 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:55:35,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-10-13 00:55:35,884 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/data/0433b5cee/c7398d0e91fd4bdf83533f2189bdecc6/FLAGf84e2a53a [2021-10-13 00:55:36,296 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:55:36,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-10-13 00:55:36,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/data/0433b5cee/c7398d0e91fd4bdf83533f2189bdecc6/FLAGf84e2a53a [2021-10-13 00:55:36,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/data/0433b5cee/c7398d0e91fd4bdf83533f2189bdecc6 [2021-10-13 00:55:36,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:55:36,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:55:36,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:55:36,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:55:36,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:55:36,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:36,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5a3964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36, skipping insertion in model container [2021-10-13 00:55:36,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:36,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:55:36,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:55:36,940 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c[525,538] [2021-10-13 00:55:36,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:55:36,960 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:55:36,971 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c[525,538] [2021-10-13 00:55:36,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:55:36,989 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:55:36,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36 WrapperNode [2021-10-13 00:55:36,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:55:36,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:55:36,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:55:36,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:55:36,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:55:37,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:55:37,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:55:37,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:55:37,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:55:37,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:55:37,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:55:37,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:55:37,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (1/1) ... [2021-10-13 00:55:37,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:55:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:55:37,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:55:37,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:55:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:55:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:55:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:55:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:55:37,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:55:37,388 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 00:55:37,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:55:37 BoogieIcfgContainer [2021-10-13 00:55:37,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:55:37,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:55:37,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:55:37,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:55:37,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:55:36" (1/3) ... [2021-10-13 00:55:37,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6788ca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:55:37, skipping insertion in model container [2021-10-13 00:55:37,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:36" (2/3) ... [2021-10-13 00:55:37,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6788ca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:55:37, skipping insertion in model container [2021-10-13 00:55:37,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:55:37" (3/3) ... [2021-10-13 00:55:37,398 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound10.c [2021-10-13 00:55:37,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:55:37,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:55:37,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:55:37,497 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:55:37,498 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:55:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:55:37,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:55:37,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:55:37,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:55:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:55:37,523 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 00:55:37,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:55:37,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231684703] [2021-10-13 00:55:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:37,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:55:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:55:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:55:37,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:55:37,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231684703] [2021-10-13 00:55:37,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231684703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:55:37,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:55:37,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:55:37,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739888804] [2021-10-13 00:55:37,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:55:37,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:55:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:55:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:55:37,699 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:55:37,714 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-10-13 00:55:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:55:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:55:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:55:37,723 INFO L225 Difference]: With dead ends: 35 [2021-10-13 00:55:37,724 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 00:55:37,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:55:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 00:55:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 00:55:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-13 00:55:37,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-13 00:55:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:55:37,757 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-13 00:55:37,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-13 00:55:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:55:37,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:55:37,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:55:37,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:55:37,759 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:55:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:55:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 00:55:37,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:55:37,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159899755] [2021-10-13 00:55:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:37,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:55:37,782 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:55:37,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130758986] [2021-10-13 00:55:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:37,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:37,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:55:37,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:55:37,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:55:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:55:37,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:55:37,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:55:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:55:38,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:55:38,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159899755] [2021-10-13 00:55:38,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:55:38,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130758986] [2021-10-13 00:55:38,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130758986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:55:38,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:55:38,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:55:38,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044403197] [2021-10-13 00:55:38,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:55:38,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:55:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:55:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:55:38,199 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:55:38,339 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-13 00:55:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:55:38,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:55:38,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:55:38,341 INFO L225 Difference]: With dead ends: 25 [2021-10-13 00:55:38,341 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:55:38,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:55:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:55:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-13 00:55:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 00:55:38,346 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-10-13 00:55:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:55:38,347 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 00:55:38,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 00:55:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:55:38,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:55:38,348 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:55:38,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:55:38,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:38,571 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:55:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:55:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-10-13 00:55:38,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:55:38,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590426181] [2021-10-13 00:55:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:38,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:55:38,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:55:38,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224901076] [2021-10-13 00:55:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:38,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:38,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:55:38,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:55:38,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:55:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:55:38,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:55:38,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:55:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:55:38,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:55:38,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590426181] [2021-10-13 00:55:38,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:55:38,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224901076] [2021-10-13 00:55:38,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224901076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:55:38,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:55:38,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:55:38,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302417039] [2021-10-13 00:55:38,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:55:38,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:55:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:55:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:55:38,768 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:55:38,841 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-13 00:55:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:55:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:55:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:55:38,844 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:55:38,844 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 00:55:38,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:55:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 00:55:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-13 00:55:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-13 00:55:38,858 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-10-13 00:55:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:55:38,858 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-13 00:55:38,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-13 00:55:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:55:38,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:55:38,860 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:55:38,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:55:39,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:39,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:55:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:55:39,076 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-10-13 00:55:39,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:55:39,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085191138] [2021-10-13 00:55:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:39,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:55:39,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:55:39,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463714098] [2021-10-13 00:55:39,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:55:39,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:55:39,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:55:39,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:55:39,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:55:39,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:55:39,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:55:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:55:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:55:39,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:55:39,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085191138] [2021-10-13 00:55:39,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:55:39,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463714098] [2021-10-13 00:55:39,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463714098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:55:39,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:55:39,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:55:39,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208544130] [2021-10-13 00:55:39,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:55:39,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:55:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:55:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:55:39,543 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:55:39,697 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-10-13 00:55:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:55:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:55:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:55:39,698 INFO L225 Difference]: With dead ends: 31 [2021-10-13 00:55:39,698 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 00:55:39,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:55:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 00:55:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-13 00:55:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-13 00:55:39,704 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-10-13 00:55:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:55:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-13 00:55:39,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:55:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-13 00:55:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:55:39,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:55:39,705 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:55:39,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:55:39,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:39,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:55:39,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:55:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-10-13 00:55:39,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:55:39,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042052694] [2021-10-13 00:55:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:55:39,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:55:39,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:55:39,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219784918] [2021-10-13 00:55:39,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:55:39,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:55:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:55:39,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:55:39,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:55:40,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:55:40,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:55:40,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:55:40,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:55:53,474 WARN L207 SmtUtils]: Spent 6.30 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-13 00:56:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:56:17,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:17,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042052694] [2021-10-13 00:56:17,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:56:17,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219784918] [2021-10-13 00:56:17,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219784918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:56:17,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:56:17,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:56:17,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441600088] [2021-10-13 00:56:17,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:56:17,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:56:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-10-13 00:56:17,364 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:56:40,053 WARN L207 SmtUtils]: Spent 14.32 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-10-13 00:56:59,091 WARN L207 SmtUtils]: Spent 9.80 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-13 00:57:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:03,202 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-13 00:57:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:57:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:57:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:57:03,203 INFO L225 Difference]: With dead ends: 24 [2021-10-13 00:57:03,203 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:57:03,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 42647.9ms TimeCoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2021-10-13 00:57:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:57:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:57:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:57:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:57:03,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-13 00:57:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:57:03,204 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:57:03,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:57:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:57:03,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:57:03,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:57:03,207 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:57:03,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 00:57:03,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:03,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:57:03,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:57:03,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:57:03,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:57:03,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:57:10,661 WARN L207 SmtUtils]: Spent 7.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-10-13 00:57:19,171 WARN L207 SmtUtils]: Spent 8.51 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-10-13 00:57:19,174 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~x~0 1)) (.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= ULTIMATE.start_main_~z~0 10))) (or (let ((.cse4 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse3 (not .cse4))) (and .cse0 .cse1 (or .cse2 .cse3) (or (= ULTIMATE.start_main_~y~0 0) (and (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3)) (or .cse4 (let ((.cse7 (+ (- 1) ULTIMATE.start_main_~x~0))) (let ((.cse5 (div .cse7 ULTIMATE.start_main_~z~0)) (.cse6 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (= (mod (+ (- 1) .cse5) ULTIMATE.start_main_~z~0) 0) (= (+ (* .cse5 ULTIMATE.start_main_~z~0) 1) (+ .cse5 (* .cse6 ULTIMATE.start_main_~z~0))) (= (mod .cse7 ULTIMATE.start_main_~z~0) 0) (= (mod .cse6 ULTIMATE.start_main_~z~0) 0)))))))) (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)))) [2021-10-13 00:57:19,174 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-10-13 00:57:19,174 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:57:19,175 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:57:19,175 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 38 39) the Hoare annotation is: (let ((.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~z~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 10))) (or (let ((.cse5 (+ (- 1) ULTIMATE.start_main_~x~0))) (let ((.cse0 (div .cse5 ULTIMATE.start_main_~z~0)) (.cse4 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (= (mod (+ (- 1) .cse0) ULTIMATE.start_main_~z~0) 0) .cse1 .cse2 (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3 (= (+ (* .cse0 ULTIMATE.start_main_~z~0) 1) (+ .cse0 (* .cse4 ULTIMATE.start_main_~z~0))) (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (mod .cse4 ULTIMATE.start_main_~z~0) 0)))) (and .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1)))) [2021-10-13 00:57:19,175 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:57:19,175 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:57:19,175 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:57:19,175 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:57:19,176 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-13 00:57:19,177 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:57:19,177 INFO L860 garLoopResultBuilder]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-10-13 00:57:19,180 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:57:19,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:57:19 BoogieIcfgContainer [2021-10-13 00:57:19,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:57:19,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:57:19,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:57:19,195 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:57:19,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:55:37" (3/4) ... [2021-10-13 00:57:19,203 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:57:19,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 00:57:19,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:57:19,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:57:19,214 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:57:19,294 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:57:19,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:57:19,296 INFO L168 Benchmark]: Toolchain (without parser) took 102603.37 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 64.7 MB in the beginning and 55.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,296 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 80.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:19,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.91 ms. Allocated memory is still 107.0 MB. Free memory was 64.5 MB in the beginning and 80.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,298 INFO L168 Benchmark]: Boogie Preprocessor took 32.96 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,298 INFO L168 Benchmark]: RCFGBuilder took 332.97 ms. Allocated memory is still 107.0 MB. Free memory was 77.6 MB in the beginning and 67.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,299 INFO L168 Benchmark]: TraceAbstraction took 101802.61 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 57.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,299 INFO L168 Benchmark]: Witness Printer took 100.16 ms. Allocated memory is still 132.1 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:19,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory is still 80.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.91 ms. Allocated memory is still 107.0 MB. Free memory was 64.5 MB in the beginning and 80.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 107.0 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.96 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 332.97 ms. Allocated memory is still 107.0 MB. Free memory was 77.6 MB in the beginning and 67.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 101802.61 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 57.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * Witness Printer took 100.16 ms. Allocated memory is still 132.1 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 101694.2ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 11.0ms, AutomataDifference: 46262.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15765.1ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 37 SDslu, 118 SDs, 0 SdLazy, 152 SolverSat, 29 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 16635.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 42862.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 214 HoareAnnotationTreeSize, 4 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 116.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 15643.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.3ms SsaConstructionTime, 412.8ms SatisfiabilityAnalysisTime, 37847.4ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 25 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/24 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((0 <= z && z <= 10) && (x == 1 || !(z == 0))) && (y == 0 || (0 == y % z && !(z == 0)))) && (z == 0 || ((((-1 + (-1 + x) / z) % z == 0 && (-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z) && (-1 + x) % z == 0) && y / z % z == 0))) || (((0 <= z && z <= 10) && y == 1) && x == 1)) || ((((1 <= cond && 0 <= z) && z <= 10) && x == z + 1) && z == y) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((((-1 + (-1 + x) / z) % z == 0 && 0 <= z) && z <= 10) && 0 == y % z) && 1 == cond) && (-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z) && !(z == 0)) && (-1 + x) % z == 0) && y / z % z == 0) || ((((0 <= z && z <= 10) && 1 == cond) && x == z + 1) && z == y)) || ((((1 <= cond && 0 <= z) && z <= 10) && y == 1) && x == 1) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:57:19,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2cc776d-c422-4cc5-b5f7-890e901e3278/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...