./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN --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 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:35:18,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:35:18,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:35:18,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:35:18,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:35:18,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:35:18,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:35:18,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:35:18,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:35:18,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:35:18,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:35:18,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:35:18,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:35:18,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:35:18,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:35:18,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:35:18,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:35:18,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:35:18,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:35:18,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:35:18,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:35:18,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:35:18,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:35:18,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:35:18,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:35:18,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:35:18,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:35:18,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:35:18,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:35:18,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:35:18,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:35:18,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:35:18,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:35:18,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:35:18,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:35:18,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:35:18,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:35:18,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:35:18,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:35:18,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:35:18,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:35:18,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:35:18,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:35:18,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:35:18,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:35:18,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:35:18,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:35:18,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:35:18,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:35:18,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:35:18,627 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:35:18,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:35:18,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:35:18,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:35:18,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:35:18,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:35:18,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:35:18,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:35:18,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:35:18,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:35:18,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:35:18,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:35:18,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:35:18,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:35:18,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:35:18,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:35:18,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:18,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:35:18,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:35:18,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:35:18,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:35:18,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:35:18,643 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:35:18,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:35:18,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:35:18,643 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_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 [2022-11-20 11:35:19,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:35:19,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:35:19,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:35:19,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:35:19,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:35:19,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-11-20 11:35:22,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:35:22,432 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:35:22,434 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2022-11-20 11:35:22,462 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/data/624d4f081/5e9e3031eb5145fe8b637da4466aeb13/FLAGe0914c93d [2022-11-20 11:35:22,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/data/624d4f081/5e9e3031eb5145fe8b637da4466aeb13 [2022-11-20 11:35:22,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:35:22,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:35:22,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:22,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:35:22,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:35:22,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9c41fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22, skipping insertion in model container [2022-11-20 11:35:22,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:35:22,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:35:22,666 WARN L237 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_9cfdff2d-2882-452e-8c6e-793c724f17ab/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2022-11-20 11:35:22,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:22,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:35:22,706 WARN L237 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_9cfdff2d-2882-452e-8c6e-793c724f17ab/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2022-11-20 11:35:22,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:22,727 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:35:22,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22 WrapperNode [2022-11-20 11:35:22,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:22,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:22,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:35:22,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:35:22,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,764 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-20 11:35:22,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:22,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:35:22,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:35:22,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:35:22,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:35:22,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:35:22,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:35:22,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:35:22,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (1/1) ... [2022-11-20 11:35:22,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:22,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:35:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:35:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:35:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:35:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:35:22,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:35:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:35:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:35:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:35:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:35:22,961 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:35:22,964 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:35:23,201 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:35:23,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:35:23,207 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:35:23,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:23 BoogieIcfgContainer [2022-11-20 11:35:23,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:35:23,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:35:23,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:35:23,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:35:23,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:22" (1/3) ... [2022-11-20 11:35:23,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:23, skipping insertion in model container [2022-11-20 11:35:23,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:22" (2/3) ... [2022-11-20 11:35:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a54d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:23, skipping insertion in model container [2022-11-20 11:35:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:23" (3/3) ... [2022-11-20 11:35:23,219 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2022-11-20 11:35:23,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:35:23,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:35:23,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:35:23,355 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d1e0313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:35:23,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:35:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:35:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:35:23,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:23,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:23,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2022-11-20 11:35:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628520295] [2022-11-20 11:35:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:23,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628520295] [2022-11-20 11:35:23,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:35:23,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834232462] [2022-11-20 11:35:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:23,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:23,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:23,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:23,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:35:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:23,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:35:23,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:35:23,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:23,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834232462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:23,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:23,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:35:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146170904] [2022-11-20 11:35:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:23,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:35:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:35:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:35:23,794 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:35:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:23,816 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-11-20 11:35:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:35:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-20 11:35:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:23,825 INFO L225 Difference]: With dead ends: 51 [2022-11-20 11:35:23,825 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 11:35:23,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:35:23,832 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:23,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:35:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 11:35:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 11:35:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:35:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 11:35:23,874 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2022-11-20 11:35:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:23,876 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 11:35:23,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:35:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 11:35:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:35:23,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:23,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:23,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:35:24,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:35:24,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2022-11-20 11:35:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114979441] [2022-11-20 11:35:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:24,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785775543] [2022-11-20 11:35:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:24,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:24,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:24,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:24,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:35:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:24,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:35:24,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:35:24,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:24,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114979441] [2022-11-20 11:35:24,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:24,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785775543] [2022-11-20 11:35:24,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785775543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:24,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:24,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:35:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957914440] [2022-11-20 11:35:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:24,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:35:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:35:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:35:24,329 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:35:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:24,435 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-20 11:35:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-20 11:35:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:24,437 INFO L225 Difference]: With dead ends: 35 [2022-11-20 11:35:24,437 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 11:35:24,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:35:24,439 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:24,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:35:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 11:35:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-11-20 11:35:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:35:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-20 11:35:24,448 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-11-20 11:35:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:24,450 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-20 11:35:24,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 11:35:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-20 11:35:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:35:24,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:24,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:24,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:24,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:24,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2022-11-20 11:35:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:24,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316860464] [2022-11-20 11:35:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:24,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:24,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:24,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846884341] [2022-11-20 11:35:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:24,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:24,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:35:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:24,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:35:24,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:24,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:24,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:24,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316860464] [2022-11-20 11:35:24,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:24,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846884341] [2022-11-20 11:35:24,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846884341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:24,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:24,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:35:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496594256] [2022-11-20 11:35:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:35:24,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:35:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:35:24,891 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:35:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:25,004 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 11:35:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:35:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-11-20 11:35:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:25,007 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:35:25,007 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 11:35:25,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:35:25,009 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:25,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:35:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 11:35:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-20 11:35:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:35:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 11:35:25,021 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2022-11-20 11:35:25,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:25,022 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 11:35:25,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 11:35:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 11:35:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:35:25,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:25,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:25,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 11:35:25,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2022-11-20 11:35:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151431718] [2022-11-20 11:35:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:25,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:25,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:25,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815382102] [2022-11-20 11:35:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:25,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:25,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:35:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:25,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:35:25,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:35:25,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:35:38,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151431718] [2022-11-20 11:35:38,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815382102] [2022-11-20 11:35:38,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815382102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:38,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:38,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-20 11:35:38,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544833005] [2022-11-20 11:35:38,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:35:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:35:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=120, Unknown=4, NotChecked=0, Total=156 [2022-11-20 11:35:38,692 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:35:47,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:35:54,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:35:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:58,042 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2022-11-20 11:35:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:35:58,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2022-11-20 11:35:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:58,048 INFO L225 Difference]: With dead ends: 52 [2022-11-20 11:35:58,048 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:35:58,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=71, Invalid=265, Unknown=6, NotChecked=0, Total=342 [2022-11-20 11:35:58,050 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:58,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 159 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:35:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:35:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2022-11-20 11:35:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.25) internal successors, (40), 33 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 11:35:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2022-11-20 11:35:58,078 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 33 [2022-11-20 11:35:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:58,079 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-11-20 11:35:58,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:35:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-11-20 11:35:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:35:58,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:58,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:58,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:58,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:58,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2022-11-20 11:35:58,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:58,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513039284] [2022-11-20 11:35:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:58,340 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:35:58,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478852091] [2022-11-20 11:35:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:58,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:35:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:58,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:35:58,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:35:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:35:58,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:58,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:35:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513039284] [2022-11-20 11:35:59,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:35:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478852091] [2022-11-20 11:35:59,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478852091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:59,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:59,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-20 11:35:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019401292] [2022-11-20 11:35:59,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:59,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:35:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:35:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:35:59,937 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 11:36:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:01,370 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2022-11-20 11:36:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:36:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-11-20 11:36:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:01,388 INFO L225 Difference]: With dead ends: 83 [2022-11-20 11:36:01,388 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 11:36:01,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:36:01,390 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:01,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 123 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:36:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 11:36:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-11-20 11:36:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 55 states have internal predecessors, (69), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:36:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2022-11-20 11:36:01,433 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 33 [2022-11-20 11:36:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:01,436 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2022-11-20 11:36:01,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-20 11:36:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2022-11-20 11:36:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:36:01,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:01,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:01,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:36:01,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:01,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:01,649 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2022-11-20 11:36:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:01,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934320670] [2022-11-20 11:36:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:01,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:01,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:36:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995628693] [2022-11-20 11:36:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:01,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:01,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:36:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:01,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:36:01,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:36:01,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:36:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934320670] [2022-11-20 11:36:02,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:36:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995628693] [2022-11-20 11:36:02,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995628693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:02,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:36:02,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-11-20 11:36:02,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214785830] [2022-11-20 11:36:02,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:02,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:36:02,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:36:02,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:36:02,027 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:36:04,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:06,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:06,194 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2022-11-20 11:36:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:36:06,194 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-11-20 11:36:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:06,196 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:36:06,196 INFO L226 Difference]: Without dead ends: 75 [2022-11-20 11:36:06,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:36:06,198 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:06,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 80 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-20 11:36:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-20 11:36:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-20 11:36:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:36:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2022-11-20 11:36:06,218 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 39 [2022-11-20 11:36:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:06,218 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2022-11-20 11:36:06,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:36:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2022-11-20 11:36:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 11:36:06,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:06,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:06,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:36:06,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:06,428 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times [2022-11-20 11:36:06,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:06,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707188527] [2022-11-20 11:36:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:06,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:36:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264665740] [2022-11-20 11:36:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:06,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:06,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:06,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:06,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:36:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:06,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:36:06,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:36:12,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:36:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707188527] [2022-11-20 11:36:20,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:36:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264665740] [2022-11-20 11:36:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264665740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:36:20,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:36:20,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2022-11-20 11:36:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493229374] [2022-11-20 11:36:20,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:36:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:36:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=429, Unknown=2, NotChecked=0, Total=506 [2022-11-20 11:36:20,263 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-20 11:36:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:36:31,852 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2022-11-20 11:36:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:36:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 51 [2022-11-20 11:36:31,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:36:31,855 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:36:31,856 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 11:36:31,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=199, Invalid=1131, Unknown=2, NotChecked=0, Total=1332 [2022-11-20 11:36:31,863 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:36:31,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 256 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 486 Invalid, 0 Unknown, 24 Unchecked, 2.8s Time] [2022-11-20 11:36:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 11:36:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2022-11-20 11:36:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:36:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2022-11-20 11:36:31,898 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 51 [2022-11-20 11:36:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:36:31,901 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2022-11-20 11:36:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-20 11:36:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2022-11-20 11:36:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:36:31,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:36:31,904 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:31,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:36:32,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:36:32,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:36:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1307593476, now seen corresponding path program 2 times [2022-11-20 11:36:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113771186] [2022-11-20 11:36:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:32,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:36:32,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957982465] [2022-11-20 11:36:32,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:36:32,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:36:32,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:36:32,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:36:32,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:36:32,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:36:32,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:36:32,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 11:36:32,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:36:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:36:34,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:36:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:40,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113771186] [2022-11-20 11:36:40,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:36:40,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957982465] [2022-11-20 11:36:40,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957982465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:36:40,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:36:40,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-20 11:36:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177076710] [2022-11-20 11:36:40,919 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:36:40,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:36:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:36:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=512, Unknown=2, NotChecked=0, Total=600 [2022-11-20 11:36:40,922 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:36:43,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:45,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:47,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:49,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:51,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:53,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:55,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:57,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:36:59,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:37:01,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 11:37:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:02,200 INFO L93 Difference]: Finished difference Result 116 states and 140 transitions. [2022-11-20 11:37:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:37:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60 [2022-11-20 11:37:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:02,211 INFO L225 Difference]: With dead ends: 116 [2022-11-20 11:37:02,212 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 11:37:02,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=101, Invalid=599, Unknown=2, NotChecked=0, Total=702 [2022-11-20 11:37:02,214 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:02,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 216 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 10 Unknown, 0 Unchecked, 21.2s Time] [2022-11-20 11:37:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 11:37:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-11-20 11:37:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 86 states have internal predecessors, (98), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 11:37:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2022-11-20 11:37:02,252 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 60 [2022-11-20 11:37:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:02,253 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2022-11-20 11:37:02,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 17 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:37:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2022-11-20 11:37:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:37:02,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:37:02,256 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:02,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:02,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:37:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:37:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 602841912, now seen corresponding path program 3 times [2022-11-20 11:37:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:37:02,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440859651] [2022-11-20 11:37:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:37:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:37:02,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:37:02,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580536925] [2022-11-20 11:37:02,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:37:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:37:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:37:02,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:37:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:37:02,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:37:02,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:37:02,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:37:02,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:37:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:37:05,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:37:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:37:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:37:06,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440859651] [2022-11-20 11:37:06,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:37:06,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580536925] [2022-11-20 11:37:06,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580536925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:37:06,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:37:06,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2022-11-20 11:37:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343902931] [2022-11-20 11:37:06,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:37:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:37:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:37:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:37:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:37:06,818 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 11:37:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:37:10,755 INFO L93 Difference]: Finished difference Result 114 states and 138 transitions. [2022-11-20 11:37:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:37:10,755 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 60 [2022-11-20 11:37:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:37:10,756 INFO L225 Difference]: With dead ends: 114 [2022-11-20 11:37:10,756 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:37:10,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=126, Invalid=575, Unknown=1, NotChecked=0, Total=702 [2022-11-20 11:37:10,758 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:37:10,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 105 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 23 Unchecked, 0.6s Time] [2022-11-20 11:37:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:37:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:37:10,759 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) [2022-11-20 11:37:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:37:10,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2022-11-20 11:37:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:37:10,760 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:37:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 7 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 11:37:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:37:10,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:37:10,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:37:10,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:37:10,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:37:10,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:37:25,193 WARN L233 SmtUtils]: Spent 10.32s on a formula simplification. DAG size of input: 139 DAG size of output: 50 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:37:25,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:37:25,206 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-11-20 11:37:25,206 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50)) [2022-11-20 11:37:25,207 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-11-20 11:37:25,207 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-20 11:37:25,207 INFO L902 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2022-11-20 11:37:25,207 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-11-20 11:37:25,208 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (<= |ULTIMATE.start_main_~b~0#1| 50))) (or (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (exists ((|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52| Int)) (let ((.cse4 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| 2))) (let ((.cse2 (+ .cse4 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|)) (.cse1 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52| 2) .cse4 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|))) (and (<= 0 .cse1) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|)) (<= 0 .cse2) (< .cse2 2) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (let ((.cse3 (div (- |ULTIMATE.start_main_~x~0#1|) (- 2)))) (+ (* .cse3 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|) (* 2 (* .cse3 |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~z~0#1| (* (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| .cse3) 2)))) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|) (not (= .cse1 1)) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| 2) (< .cse1 2))))) .cse5) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~z~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-20 11:37:25,208 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:37:25,209 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~z~0#1| .cse0) (or (not (<= 1 (mod |ULTIMATE.start_main_~y~0#1| 2))) (< |ULTIMATE.start_main_~y~0#1| 0) (= (+ (* 2 (* (div (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) [2022-11-20 11:37:25,209 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:37:25,209 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:37:25,209 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-20 11:37:25,209 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-11-20 11:37:25,210 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2022-11-20 11:37:25,210 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (<= |ULTIMATE.start_main_~b~0#1| 50))) (or (and .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (exists ((|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52| Int)) (let ((.cse4 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| 2))) (let ((.cse2 (+ .cse4 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|)) (.cse1 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52| 2) .cse4 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|))) (and (<= 0 .cse1) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|)) (<= 0 .cse2) (< .cse2 2) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (let ((.cse3 (div (- |ULTIMATE.start_main_~x~0#1|) (- 2)))) (+ (* .cse3 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|) (* 2 (* .cse3 |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~z~0#1| (* (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| .cse3) 2)))) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63|) (not (= .cse1 1)) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63| 2) (< .cse1 2))))) .cse5) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~z~0#1| 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-20 11:37:25,211 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2022-11-20 11:37:25,211 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2022-11-20 11:37:25,211 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-20 11:37:25,211 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2022-11-20 11:37:25,211 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-11-20 11:37:25,212 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-11-20 11:37:25,212 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-11-20 11:37:25,212 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-11-20 11:37:25,212 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-11-20 11:37:25,212 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-11-20 11:37:25,213 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-11-20 11:37:25,217 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-11-20 11:37:25,219 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:37:25,226 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,227 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,227 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,227 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,227 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,228 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,229 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,230 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,238 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,238 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,238 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,239 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,240 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,241 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,241 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:37:25 BoogieIcfgContainer [2022-11-20 11:37:25,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:37:25,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:37:25,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:37:25,244 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:37:25,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:23" (3/4) ... [2022-11-20 11:37:25,249 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:37:25,257 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:37:25,257 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:37:25,262 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:37:25,262 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:37:25,263 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:37:25,263 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:37:25,294 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((1 <= b && x % 2 == 0) && (\exists aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 : int, aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 : int :: (((((((0 <= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2) && a * b == -x / -2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 + 2 * (-x / -2 * y) + z + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * (-x / -2) * 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && !(aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 == 1)) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2) && aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2)) && b <= 50) || ((((b == y && 1 <= b) && z == 0) && b <= 50) && a == x) [2022-11-20 11:37:25,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:37:25,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:37:25,305 INFO L158 Benchmark]: Toolchain (without parser) took 122820.37ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 137.3MB in the beginning and 93.5MB in the end (delta: 43.8MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,306 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 94.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:37:25,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.73ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 126.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.02ms. Allocated memory is still 167.8MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 990.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:37:25,307 INFO L158 Benchmark]: Boogie Preprocessor took 22.32ms. Allocated memory is still 167.8MB. Free memory was 125.8MB in the beginning and 124.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,308 INFO L158 Benchmark]: RCFGBuilder took 420.84ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 113.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,308 INFO L158 Benchmark]: TraceAbstraction took 122030.71ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 112.2MB in the beginning and 96.7MB in the end (delta: 15.5MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,309 INFO L158 Benchmark]: Witness Printer took 60.94ms. Allocated memory is still 201.3MB. Free memory was 96.7MB in the beginning and 93.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:37:25,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 94.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.73ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 126.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.02ms. Allocated memory is still 167.8MB. Free memory was 126.8MB in the beginning and 125.8MB in the end (delta: 990.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.32ms. Allocated memory is still 167.8MB. Free memory was 125.8MB in the beginning and 124.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 420.84ms. Allocated memory is still 167.8MB. Free memory was 124.7MB in the beginning and 113.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 122030.71ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 112.2MB in the beginning and 96.7MB in the end (delta: 15.5MB). Peak memory consumption was 95.8MB. Max. memory is 16.1GB. * Witness Printer took 60.94ms. Allocated memory is still 201.3MB. Free memory was 96.7MB in the beginning and 93.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] * 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: 15]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 121.9s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 62.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 35.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 1110 SdHoareTripleChecker+Invalid, 34.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 47 IncrementalHoareTripleChecker+Unchecked, 913 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1738 IncrementalHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 197 mSDtfsCounter, 1738 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 616 GetRequests, 469 SyntacticMatches, 3 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 54.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=8, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 31 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 33 PreInvPairs, 63 NumberOfFragments, 281 HoareAnnotationTreeSize, 33 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3472 FormulaSimplificationTreeSizeReductionInter, 14.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 42.0s InterpolantComputationTime, 378 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 556 ConstructedInterpolants, 3 QuantifiedInterpolants, 3793 SizeOfPredicates, 28 NumberOfNonLiveVariables, 926 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 404/496 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 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant [2022-11-20 11:37:25,325 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,325 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,326 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,327 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,327 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,327 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,327 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,328 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,328 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,328 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,328 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,328 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,329 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,329 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,330 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,330 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,330 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,331 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,331 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,331 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,331 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,331 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,332 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,332 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,332 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,332 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,333 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,333 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,333 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,333 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52,QUANTIFIED] [2022-11-20 11:37:25,333 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] [2022-11-20 11:37:25,334 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63,QUANTIFIED] Derived loop invariant: (((1 <= b && x % 2 == 0) && (\exists aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 : int, aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 : int :: (((((((0 <= aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2) && a * b == -x / -2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 + 2 * (-x / -2 * y) + z + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * (-x / -2) * 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63) && !(aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 == 1)) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2) && aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52 * 2 + aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_46_41_52_63 < 2)) && b <= 50) || ((((b == y && 1 <= b) && z == 0) && b <= 50) && a == x) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:37:25,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cfdff2d-2882-452e-8c6e-793c724f17ab/bin/uautomizer-ug76WZFUDN/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