./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/geo1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/geo1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU --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 f88e56db5d4a069a75f7d157c02a6d71e69f72bef3f2984433669539d06b3f44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:03:58,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:03:58,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:03:58,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:03:58,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:03:58,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:03:58,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:03:58,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:03:58,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:03:58,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:03:58,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:03:58,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:03:58,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:03:58,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:03:58,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:03:58,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:03:58,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:03:58,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:03:58,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:03:58,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:03:58,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:03:58,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:03:58,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:03:58,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:03:58,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:03:58,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:03:58,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:03:58,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:03:58,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:03:58,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:03:58,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:03:58,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:03:58,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:03:58,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:03:58,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:03:58,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:03:58,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:03:58,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:03:58,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:03:58,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:03:58,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:03:58,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:03:58,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:03:58,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:03:58,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:03:58,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:03:58,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:03:58,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:03:58,700 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:03:58,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:03:58,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:03:58,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:03:58,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:03:58,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:03:58,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:03:58,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:03:58,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:03:58,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:03:58,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:03:58,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:03:58,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:03:58,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:03:58,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:03:58,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:03:58,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:03:58,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:03:58,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:03:58,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:03:58,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:03:58,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:03:58,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:03:58,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:03:58,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:03:58,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:03:58,712 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_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f88e56db5d4a069a75f7d157c02a6d71e69f72bef3f2984433669539d06b3f44 [2021-11-02 23:03:59,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:03:59,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:03:59,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:03:59,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:03:59,074 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:03:59,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench/geo1-ll.c [2021-11-02 23:03:59,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/data/04bd2eba1/4a99a27dd272406abe4eb6cfecc9da74/FLAG9bb5049d8 [2021-11-02 23:03:59,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:03:59,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/sv-benchmarks/c/nla-digbench/geo1-ll.c [2021-11-02 23:03:59,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/data/04bd2eba1/4a99a27dd272406abe4eb6cfecc9da74/FLAG9bb5049d8 [2021-11-02 23:04:00,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/data/04bd2eba1/4a99a27dd272406abe4eb6cfecc9da74 [2021-11-02 23:04:00,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:04:00,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:04:00,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:04:00,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:04:00,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:04:00,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70303460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00, skipping insertion in model container [2021-11-02 23:04:00,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:04:00,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:04:00,289 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_1373e89a-ba59-4908-a71f-938d61a4aa73/sv-benchmarks/c/nla-digbench/geo1-ll.c[546,559] [2021-11-02 23:04:00,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:04:00,312 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:04:00,326 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_1373e89a-ba59-4908-a71f-938d61a4aa73/sv-benchmarks/c/nla-digbench/geo1-ll.c[546,559] [2021-11-02 23:04:00,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:04:00,346 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:04:00,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00 WrapperNode [2021-11-02 23:04:00,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:04:00,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:04:00,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:04:00,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:04:00,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:04:00,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:04:00,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:04:00,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:04:00,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:04:00,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:04:00,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:04:00,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:04:00,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (1/1) ... [2021-11-02 23:04:00,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:04:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:00,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:04:00,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:04:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:04:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:04:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:04:00,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:04:00,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:04:00,752 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-02 23:04:00,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:04:00 BoogieIcfgContainer [2021-11-02 23:04:00,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:04:00,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:04:00,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:04:00,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:04:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:04:00" (1/3) ... [2021-11-02 23:04:00,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d6890b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:04:00, skipping insertion in model container [2021-11-02 23:04:00,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:04:00" (2/3) ... [2021-11-02 23:04:00,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d6890b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:04:00, skipping insertion in model container [2021-11-02 23:04:00,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:04:00" (3/3) ... [2021-11-02 23:04:00,777 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll.c [2021-11-02 23:04:00,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:04:00,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 23:04:00,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:04:00,871 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-02 23:04:00,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 23:04:00,934 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) [2021-11-02 23:04:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:04:00,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:00,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:00,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-02 23:04:00,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:00,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939571402] [2021-11-02 23:04:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:00,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:04:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:04:01,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:01,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939571402] [2021-11-02 23:04:01,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939571402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:04:01,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:04:01,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:04:01,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217600723] [2021-11-02 23:04:01,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:04:01,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:04:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:04:01,283 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) [2021-11-02 23:04:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:01,302 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-11-02 23:04:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:04:01,303 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 [2021-11-02 23:04:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:01,313 INFO L225 Difference]: With dead ends: 35 [2021-11-02 23:04:01,313 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 23:04:01,317 INFO L786 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 [2021-11-02 23:04:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 23:04:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 23:04:01,357 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) [2021-11-02 23:04:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 23:04:01,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-11-02 23:04:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:01,364 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 23:04:01,365 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) [2021-11-02 23:04:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 23:04:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:04:01,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:01,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:01,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:04:01,369 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-02 23:04:01,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:01,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49915002] [2021-11-02 23:04:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:01,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:01,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:04:01,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217438401] [2021-11-02 23:04:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:01,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:01,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:04:01,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:04:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:04:01,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:04:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:04:01,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:01,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49915002] [2021-11-02 23:04:01,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:04:01,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217438401] [2021-11-02 23:04:01,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217438401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:04:01,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:04:01,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:04:01,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353809218] [2021-11-02 23:04:01,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:04:01,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:04:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:04:01,750 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-02 23:04:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:01,809 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-02 23:04:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:04:01,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-11-02 23:04:01,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:01,812 INFO L225 Difference]: With dead ends: 25 [2021-11-02 23:04:01,812 INFO L226 Difference]: Without dead ends: 19 [2021-11-02 23:04:01,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:04:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-02 23:04:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-02 23:04:01,823 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) [2021-11-02 23:04:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-02 23:04:01,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-02 23:04:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:01,827 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-02 23:04:01,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-02 23:04:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-02 23:04:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 23:04:01,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:01,833 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:01,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:04:02,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:02,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-11-02 23:04:02,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:02,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186788052] [2021-11-02 23:04:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:02,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:02,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:04:02,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218906588] [2021-11-02 23:04:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:02,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:02,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:02,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:04:02,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:04:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:04:02,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 23:04:02,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:04:02,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:02,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186788052] [2021-11-02 23:04:02,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:04:02,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218906588] [2021-11-02 23:04:02,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218906588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:04:02,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:04:02,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 23:04:02,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309218226] [2021-11-02 23:04:02,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:04:02,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:04:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:04:02,549 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-11-02 23:04:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:02,912 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-11-02 23:04:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:04:02,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 [2021-11-02 23:04:02,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:02,914 INFO L225 Difference]: With dead ends: 28 [2021-11-02 23:04:02,914 INFO L226 Difference]: Without dead ends: 22 [2021-11-02 23:04:02,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:04:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-02 23:04:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-11-02 23:04:02,919 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) [2021-11-02 23:04:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-02 23:04:02,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-11-02 23:04:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:02,920 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-02 23:04:02,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-11-02 23:04:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-02 23:04:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:04:02,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:02,922 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:02,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:04:03,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:03,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-11-02 23:04:03,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:03,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044161132] [2021-11-02 23:04:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:03,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:03,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:04:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111519565] [2021-11-02 23:04:03,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:04:03,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:03,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:03,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:04:03,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 23:04:03,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:04:03,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:04:03,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 23:04:03,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:04:03,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044161132] [2021-11-02 23:04:03,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:04:03,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111519565] [2021-11-02 23:04:03,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111519565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:04:03,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:04:03,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-02 23:04:03,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255940834] [2021-11-02 23:04:03,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:04:03,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:04:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:04:03,671 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) [2021-11-02 23:04:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:03,843 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-02 23:04:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:04:03,844 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 [2021-11-02 23:04:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:03,844 INFO L225 Difference]: With dead ends: 31 [2021-11-02 23:04:03,845 INFO L226 Difference]: Without dead ends: 25 [2021-11-02 23:04:03,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:04:03,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-02 23:04:03,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-02 23:04:03,851 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) [2021-11-02 23:04:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-02 23:04:03,852 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-11-02 23:04:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:03,853 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-02 23:04:03,853 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) [2021-11-02 23:04:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-02 23:04:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 23:04:03,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:03,855 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:03,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:04:04,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:04,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-11-02 23:04:04,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:04,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288486415] [2021-11-02 23:04:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:04,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:04,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:04:04,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210720623] [2021-11-02 23:04:04,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:04:04,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:04,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:04:04,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 23:04:04,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 23:04:04,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:04:04,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 23:04:04,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:04:12,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:12,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288486415] [2021-11-02 23:04:12,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:04:12,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210720623] [2021-11-02 23:04:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210720623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:04:12,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:04:12,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 23:04:12,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120614103] [2021-11-02 23:04:12,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 23:04:12,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:12,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 23:04:12,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2021-11-02 23:04:12,864 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-11-02 23:04:50,275 WARN L207 SmtUtils]: Spent 28.71 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2021-11-02 23:04:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:56,447 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-02 23:04:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:04:56,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 [2021-11-02 23:04:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:56,449 INFO L225 Difference]: With dead ends: 24 [2021-11-02 23:04:56,449 INFO L226 Difference]: Without dead ends: 22 [2021-11-02 23:04:56,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=43, Invalid=64, Unknown=3, NotChecked=0, Total=110 [2021-11-02 23:04:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-02 23:04:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-02 23:04:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-11-02 23:04:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-02 23:04:56,457 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2021-11-02 23:04:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:56,458 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-02 23:04:56,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-11-02 23:04:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-02 23:04:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-02 23:04:56,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:56,459 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:56,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:04:56,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:56,660 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:04:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -167687415, now seen corresponding path program 1 times [2021-11-02 23:04:56,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:56,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103027940] [2021-11-02 23:04:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:56,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:56,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:04:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768224463] [2021-11-02 23:04:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:56,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:04:56,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:04:56,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 23:04:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:04:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 23:04:56,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 23:04:56,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:04:56,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103027940] [2021-11-02 23:04:56,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:04:56,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768224463] [2021-11-02 23:04:56,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768224463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:04:56,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:04:56,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:04:56,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997867042] [2021-11-02 23:04:56,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:04:56,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:04:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:04:56,941 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-02 23:04:57,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:57,043 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-11-02 23:04:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:04:57,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21 [2021-11-02 23:04:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:57,045 INFO L225 Difference]: With dead ends: 22 [2021-11-02 23:04:57,045 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 23:04:57,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:04:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 23:04:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 23:04:57,046 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) [2021-11-02 23:04:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 23:04:57,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-02 23:04:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:57,047 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 23:04:57,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-02 23:04:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 23:04:57,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 23:04:57,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:04:57,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 23:04:57,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 23:04:57,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:04:57,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 23:04:57,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:04:57,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:04:57,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:04:57,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 23:05:28,608 WARN L207 SmtUtils]: Spent 31.24 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-11-02 23:05:58,197 WARN L207 SmtUtils]: Spent 29.59 s on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2021-11-02 23:05:58,205 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-02 23:05:58,205 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 23:05:58,205 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 23:05:58,205 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 23:05:58,206 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-02 23:05:58,206 INFO L860 garLoopResultBuilder]: At program point L49(lines 22 50) the Hoare annotation is: true [2021-11-02 23:05:58,206 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-11-02 23:05:58,207 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (let ((.cse3 (+ (- 1) ULTIMATE.start_main_~x~0))) (and (= (mod (let ((.cse2 (div .cse3 ULTIMATE.start_main_~z~0))) (+ (* .cse2 (- 1)) (* ULTIMATE.start_main_~z~0 .cse2) 1)) ULTIMATE.start_main_~z~0) 0) (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse0 .cse1 (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0))))) [2021-11-02 23:05:58,207 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-11-02 23:05:58,207 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-11-02 23:05:58,207 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-11-02 23:05:58,208 INFO L860 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-11-02 23:05:58,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 23:05:58,208 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-02 23:05:58,208 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-11-02 23:05:58,209 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-02 23:05:58,209 INFO L857 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-11-02 23:05:58,209 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (let ((.cse1 (+ (- 1) ULTIMATE.start_main_~x~0))) (and (= (mod (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (+ (* .cse0 (- 1)) (* ULTIMATE.start_main_~z~0 .cse0) 1)) ULTIMATE.start_main_~z~0) 0) (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0)))) [2021-11-02 23:05:58,209 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 44) no Hoare annotation was computed. [2021-11-02 23:05:58,214 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2021-11-02 23:05:58,216 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:05:58,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:05:58 BoogieIcfgContainer [2021-11-02 23:05:58,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:05:58,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:05:58,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:05:58,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:05:58,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:04:00" (3/4) ... [2021-11-02 23:05:58,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 23:05:58,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-02 23:05:58,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 23:05:58,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:05:58,255 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 23:05:58,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 23:05:58,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:05:58,301 INFO L168 Benchmark]: Toolchain (without parser) took 118236.30 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 68.0 MB in the beginning and 46.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,301 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:05:58,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 58.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 90.2 MB. Free memory was 58.2 MB in the beginning and 56.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:05:58,303 INFO L168 Benchmark]: Boogie Preprocessor took 29.06 ms. Allocated memory is still 90.2 MB. Free memory was 56.7 MB in the beginning and 55.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,304 INFO L168 Benchmark]: RCFGBuilder took 334.37 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 46.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,305 INFO L168 Benchmark]: TraceAbstraction took 117480.30 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 45.6 MB in the beginning and 49.9 MB in the end (delta: -4.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,305 INFO L168 Benchmark]: Witness Printer took 62.49 ms. Allocated memory is still 125.8 MB. Free memory was 49.9 MB in the beginning and 46.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 23:05:58,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 58.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 90.2 MB. Free memory was 58.2 MB in the beginning and 56.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.06 ms. Allocated memory is still 90.2 MB. Free memory was 56.7 MB in the beginning and 55.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 334.37 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 46.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 117480.30 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 45.6 MB in the beginning and 49.9 MB in the end (delta: -4.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.49 ms. Allocated memory is still 125.8 MB. Free memory was 49.9 MB in the beginning and 46.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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: 117.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 60.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 36 SDslu, 121 SDs, 0 SdLazy, 115 SolverSat, 30 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 41.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 125 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 452 FormulaSimplificationTreeSizeReductionInter, 60.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 84 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 370 SizeOfPredicates, 29 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 31/42 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((1 == cond && y + x == z * x + 1) && z == y) || (((((((-1 + x) / z * -1 + z * ((-1 + x) / z) + 1) % z == 0 && 0 == y % z) && 1 == cond) && y + x == z * x + 1) && !(z == 0)) && (-1 + x) % z == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (x == 1 && z == y) || (((((((-1 + x) / z * -1 + z * ((-1 + x) / z) + 1) % z == 0 && 0 == y % z) && 1 == cond) && y + x == z * x + 1) && !(z == 0)) && (-1 + x) % z == 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-02 23:05:58,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1373e89a-ba59-4908-a71f-938d61a4aa73/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE