./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a --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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- 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-b5237d8 [2022-11-21 13:59:12,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:59:12,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:59:12,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:59:12,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:59:12,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:59:12,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:59:12,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:59:12,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:59:12,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:59:12,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:59:12,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:59:12,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:59:12,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:59:12,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:59:12,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:59:12,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:59:12,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:59:12,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:59:12,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:59:12,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:59:12,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:59:12,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:59:12,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:59:12,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:59:12,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:59:12,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:59:12,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:59:12,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:59:12,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:59:12,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:59:12,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:59:12,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:59:12,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:59:12,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:59:12,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:59:12,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:59:12,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:59:12,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:59:12,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:59:12,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:59:12,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:59:12,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:59:12,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:59:12,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:59:12,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:59:12,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:59:12,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:59:12,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:59:12,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:59:12,596 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:59:12,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:59:12,597 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:59:12,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:59:12,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:59:12,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:59:12,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:59:12,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:59:12,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:59:12,599 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:59:12,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:59:12,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:59:12,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:59:12,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:59:12,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:59:12,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:59:12,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:59:12,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:59:12,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:59:12,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:59:12,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:59:12,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:59:12,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:59:12,603 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:59:12,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:59:12,603 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_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2022-11-21 13:59:12,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:59:12,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:59:12,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:59:12,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:59:12,911 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:59:12,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-11-21 13:59:15,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:59:16,141 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:59:16,141 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-11-21 13:59:16,148 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/data/22f6b607f/8750fc7689624ac5a1461da39e634722/FLAG91cfe2dab [2022-11-21 13:59:16,163 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/data/22f6b607f/8750fc7689624ac5a1461da39e634722 [2022-11-21 13:59:16,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:59:16,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:59:16,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:16,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:59:16,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:59:16,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3a651a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16, skipping insertion in model container [2022-11-21 13:59:16,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:59:16,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:59:16,359 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_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2022-11-21 13:59:16,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:16,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:59:16,409 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_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2022-11-21 13:59:16,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:16,437 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:59:16,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16 WrapperNode [2022-11-21 13:59:16,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:16,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:16,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:59:16,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:59:16,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,469 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-11-21 13:59:16,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:16,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:59:16,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:59:16,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:59:16,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,492 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:59:16,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:59:16,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:59:16,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:59:16,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (1/1) ... [2022-11-21 13:59:16,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:59:16,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:16,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:59:16,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:59:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:59:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 13:59:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 13:59:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:59:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:59:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:59:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 13:59:16,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 13:59:16,651 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:59:16,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:59:16,817 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:59:16,823 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:59:16,823 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 13:59:16,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:16 BoogieIcfgContainer [2022-11-21 13:59:16,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:59:16,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:59:16,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:59:16,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:59:16,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:59:16" (1/3) ... [2022-11-21 13:59:16,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655411c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:16, skipping insertion in model container [2022-11-21 13:59:16,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:16" (2/3) ... [2022-11-21 13:59:16,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655411c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:16, skipping insertion in model container [2022-11-21 13:59:16,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:16" (3/3) ... [2022-11-21 13:59:16,834 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2022-11-21 13:59:16,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:59:16,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:59:16,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:59:16,911 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;@384149d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:59:16,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:59:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 13:59:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 13:59:16,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:16,925 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:16,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2022-11-21 13:59:16,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:16,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109779056] [2022-11-21 13:59:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:17,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109779056] [2022-11-21 13:59:17,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:59:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097209338] [2022-11-21 13:59:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:17,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:17,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:59:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:17,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:59:17,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-21 13:59:17,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:59:17,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097209338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:17,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:17,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:59:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018125109] [2022-11-21 13:59:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:59:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:59:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:59:17,353 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:59:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:17,389 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2022-11-21 13:59:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:59:17,391 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-11-21 13:59:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:17,399 INFO L225 Difference]: With dead ends: 67 [2022-11-21 13:59:17,400 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 13:59:17,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:59:17,411 INFO L413 NwaCegarLoop]: 46 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, 46 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 [2022-11-21 13:59:17,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 13:59:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-21 13:59:17,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-21 13:59:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-11-21 13:59:17,465 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2022-11-21 13:59:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:17,467 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-11-21 13:59:17,467 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:59:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-11-21 13:59:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 13:59:17,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:17,470 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:17,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 13:59:17,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:17,678 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2022-11-21 13:59:17,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:17,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023030331] [2022-11-21 13:59:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:17,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:17,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044451638] [2022-11-21 13:59:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:17,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:17,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:17,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:59:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:17,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:59:17,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 13:59:17,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 13:59:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023030331] [2022-11-21 13:59:18,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044451638] [2022-11-21 13:59:18,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044451638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:18,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:18,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-21 13:59:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404749326] [2022-11-21 13:59:18,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:18,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:59:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:59:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:59:18,045 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:59:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:18,177 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-11-21 13:59:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:59:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-11-21 13:59:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:18,179 INFO L225 Difference]: With dead ends: 48 [2022-11-21 13:59:18,179 INFO L226 Difference]: Without dead ends: 40 [2022-11-21 13:59:18,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:59:18,181 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:18,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-21 13:59:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-21 13:59:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-21 13:59:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-11-21 13:59:18,191 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2022-11-21 13:59:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:18,192 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-11-21 13:59:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 13:59:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-11-21 13:59:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 13:59:18,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:18,193 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:18,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:18,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:18,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2022-11-21 13:59:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963407442] [2022-11-21 13:59:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:18,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:18,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280775031] [2022-11-21 13:59:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:18,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:18,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:18,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:59:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:59:18,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 13:59:18,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 13:59:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:18,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963407442] [2022-11-21 13:59:18,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:18,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280775031] [2022-11-21 13:59:18,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280775031] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:18,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:59:18,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-21 13:59:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912531726] [2022-11-21 13:59:18,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:18,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:59:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:59:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:59:18,695 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 13:59:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:18,757 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-11-21 13:59:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:59:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2022-11-21 13:59:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:18,759 INFO L225 Difference]: With dead ends: 39 [2022-11-21 13:59:18,760 INFO L226 Difference]: Without dead ends: 37 [2022-11-21 13:59:18,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:59:18,761 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:18,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-21 13:59:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-21 13:59:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-21 13:59:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-21 13:59:18,772 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 41 [2022-11-21 13:59:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:18,773 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-21 13:59:18,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 13:59:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-21 13:59:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-21 13:59:18,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:18,775 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:18,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:18,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 13:59:18,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2022-11-21 13:59:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:18,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375675389] [2022-11-21 13:59:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:19,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804280834] [2022-11-21 13:59:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:19,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:19,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:19,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:19,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:59:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 13:59:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 13:59:19,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375675389] [2022-11-21 13:59:19,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804280834] [2022-11-21 13:59:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804280834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:19,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:59:19,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-21 13:59:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446012517] [2022-11-21 13:59:19,540 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:59:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:59:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:59:19,543 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 13:59:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:19,799 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-11-21 13:59:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:59:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2022-11-21 13:59:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:19,801 INFO L225 Difference]: With dead ends: 50 [2022-11-21 13:59:19,801 INFO L226 Difference]: Without dead ends: 48 [2022-11-21 13:59:19,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:59:19,802 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:19,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 143 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-21 13:59:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-21 13:59:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-21 13:59:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-11-21 13:59:19,817 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 46 [2022-11-21 13:59:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:19,818 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-21 13:59:19,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 13:59:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-11-21 13:59:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 13:59:19,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:19,820 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:19,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:20,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 779090230, now seen corresponding path program 1 times [2022-11-21 13:59:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:20,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116812967] [2022-11-21 13:59:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:20,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244930201] [2022-11-21 13:59:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:20,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:20,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:20,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:59:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 13:59:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-21 13:59:20,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:20,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:20,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116812967] [2022-11-21 13:59:20,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:20,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244930201] [2022-11-21 13:59:20,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244930201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:20,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:59:20,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-21 13:59:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412810582] [2022-11-21 13:59:20,520 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:59:20,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:59:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:59:20,523 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 13:59:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:20,797 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-11-21 13:59:20,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:59:20,798 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2022-11-21 13:59:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:20,800 INFO L225 Difference]: With dead ends: 54 [2022-11-21 13:59:20,801 INFO L226 Difference]: Without dead ends: 52 [2022-11-21 13:59:20,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:59:20,803 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:20,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 126 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-21 13:59:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-21 13:59:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-21 13:59:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-11-21 13:59:20,835 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 51 [2022-11-21 13:59:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-11-21 13:59:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 13:59:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-11-21 13:59:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 13:59:20,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:20,849 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:20,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:21,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:21,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2022-11-21 13:59:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:21,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603335015] [2022-11-21 13:59:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:21,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:21,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256723601] [2022-11-21 13:59:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:21,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:21,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:59:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:21,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 13:59:21,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-21 13:59:21,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:21,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603335015] [2022-11-21 13:59:21,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:21,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256723601] [2022-11-21 13:59:21,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256723601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:21,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:59:21,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-21 13:59:21,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858726355] [2022-11-21 13:59:21,667 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:59:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:59:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:59:21,668 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 13:59:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:21,937 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-21 13:59:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:59:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2022-11-21 13:59:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:21,939 INFO L225 Difference]: With dead ends: 60 [2022-11-21 13:59:21,939 INFO L226 Difference]: Without dead ends: 58 [2022-11-21 13:59:21,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:59:21,940 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:21,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 120 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-21 13:59:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-11-21 13:59:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-21 13:59:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2022-11-21 13:59:21,954 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 56 [2022-11-21 13:59:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:21,955 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-11-21 13:59:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 13:59:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2022-11-21 13:59:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:59:21,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:21,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:21,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:22,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2022-11-21 13:59:22,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:22,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271040805] [2022-11-21 13:59:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:22,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:22,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136341231] [2022-11-21 13:59:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:22,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:22,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:22,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:22,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:59:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:22,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:59:22,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-21 13:59:22,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-21 13:59:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:22,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271040805] [2022-11-21 13:59:22,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:22,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136341231] [2022-11-21 13:59:22,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136341231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:22,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:22,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-21 13:59:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456418550] [2022-11-21 13:59:22,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:22,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:59:22,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:59:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:59:22,467 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-21 13:59:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:22,709 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-11-21 13:59:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:59:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2022-11-21 13:59:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:22,712 INFO L225 Difference]: With dead ends: 102 [2022-11-21 13:59:22,712 INFO L226 Difference]: Without dead ends: 94 [2022-11-21 13:59:22,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:59:22,714 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 38 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:22,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 195 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-21 13:59:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-21 13:59:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-21 13:59:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2022-11-21 13:59:22,767 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2022-11-21 13:59:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:22,768 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2022-11-21 13:59:22,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-21 13:59:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2022-11-21 13:59:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 13:59:22,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:22,770 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:22,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 13:59:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 13:59:22,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2022-11-21 13:59:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965850306] [2022-11-21 13:59:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:22,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:22,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494142176] [2022-11-21 13:59:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:22,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:22,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:59:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:23,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:59:23,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 13:59:23,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-21 13:59:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965850306] [2022-11-21 13:59:23,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494142176] [2022-11-21 13:59:23,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494142176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:23,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:23,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-11-21 13:59:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909420862] [2022-11-21 13:59:23,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:59:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:59:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:59:23,517 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-21 13:59:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:23,809 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2022-11-21 13:59:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:59:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) Word has length 71 [2022-11-21 13:59:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:23,811 INFO L225 Difference]: With dead ends: 100 [2022-11-21 13:59:23,811 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 13:59:23,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:59:23,812 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 38 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:23,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 180 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 13:59:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-21 13:59:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-21 13:59:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2022-11-21 13:59:23,826 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 71 [2022-11-21 13:59:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:23,826 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2022-11-21 13:59:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.769230769230769) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2022-11-21 13:59:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-11-21 13:59:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 13:59:23,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:23,828 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:23,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:24,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:24,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2022-11-21 13:59:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631786939] [2022-11-21 13:59:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:24,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732813023] [2022-11-21 13:59:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:24,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:24,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:24,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:24,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:59:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:24,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 13:59:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-21 13:59:24,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-21 13:59:25,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:25,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631786939] [2022-11-21 13:59:25,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:25,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732813023] [2022-11-21 13:59:25,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732813023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:25,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:25,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-21 13:59:25,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502022504] [2022-11-21 13:59:25,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:25,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 13:59:25,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:25,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 13:59:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:59:25,580 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 23 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 17 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2022-11-21 13:59:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:28,946 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2022-11-21 13:59:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 13:59:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 17 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 87 [2022-11-21 13:59:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:28,947 INFO L225 Difference]: With dead ends: 87 [2022-11-21 13:59:28,948 INFO L226 Difference]: Without dead ends: 85 [2022-11-21 13:59:28,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:59:28,949 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 57 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:28,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 278 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:59:28,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-21 13:59:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-11-21 13:59:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 47 states have internal predecessors, (49), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-21 13:59:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-11-21 13:59:28,980 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 87 [2022-11-21 13:59:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:28,981 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-11-21 13:59:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 17 states have internal predecessors, (39), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2022-11-21 13:59:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-11-21 13:59:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 13:59:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:28,982 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:28,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 13:59:29,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:29,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash 169494115, now seen corresponding path program 1 times [2022-11-21 13:59:29,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:29,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643111455] [2022-11-21 13:59:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:29,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:29,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:29,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694106368] [2022-11-21 13:59:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:29,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:29,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:29,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:29,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:59:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-21 13:59:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-21 13:59:29,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:32,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643111455] [2022-11-21 13:59:32,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:32,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694106368] [2022-11-21 13:59:32,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694106368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:32,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:59:32,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-21 13:59:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835973378] [2022-11-21 13:59:32,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:32,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:59:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:59:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:59:32,614 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-21 13:59:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:33,354 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2022-11-21 13:59:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:59:33,355 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 92 [2022-11-21 13:59:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:33,358 INFO L225 Difference]: With dead ends: 90 [2022-11-21 13:59:33,358 INFO L226 Difference]: Without dead ends: 79 [2022-11-21 13:59:33,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:59:33,359 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:33,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 148 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:59:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-21 13:59:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-21 13:59:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 47 states have internal predecessors, (48), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-21 13:59:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2022-11-21 13:59:33,389 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 92 [2022-11-21 13:59:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:33,390 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2022-11-21 13:59:33,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-21 13:59:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2022-11-21 13:59:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-21 13:59:33,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:33,392 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:33,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:33,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:59:33,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1935008700, now seen corresponding path program 2 times [2022-11-21 13:59:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:33,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905719456] [2022-11-21 13:59:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:33,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 13:59:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769736113] [2022-11-21 13:59:33,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:33,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:33,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:33,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:59:33,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:59:33,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:33,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 13:59:33,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 74 proven. 33 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-11-21 13:59:33,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-21 13:59:34,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905719456] [2022-11-21 13:59:34,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 13:59:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769736113] [2022-11-21 13:59:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769736113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:34,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:34,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2022-11-21 13:59:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946371400] [2022-11-21 13:59:34,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:59:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:59:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:59:34,082 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-21 13:59:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:34,385 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2022-11-21 13:59:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:59:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) Word has length 114 [2022-11-21 13:59:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:34,386 INFO L225 Difference]: With dead ends: 79 [2022-11-21 13:59:34,386 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 13:59:34,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 13:59:34,387 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:34,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 175 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 13:59:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 13:59:34,388 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) [2022-11-21 13:59:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 13:59:34,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-11-21 13:59:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:59:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-21 13:59:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 13:59:34,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 13:59:34,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 13:59:34,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:34,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 13:59:34,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 13:59:37,136 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse0 .cse1 .cse2 .cse3 (<= .cse4 1) .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~x~0#1| .cse4) .cse10)) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse7 .cse8 .cse9 .cse10))) [2022-11-21 13:59:37,137 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse0 .cse1 .cse2 .cse3 (<= .cse4 1) .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~x~0#1| .cse4) .cse10)) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse7 .cse8 .cse9 .cse10))) [2022-11-21 13:59:37,137 INFO L902 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2022-11-21 13:59:37,137 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 13:59:37,137 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 13:59:37,137 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 13:59:37,137 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) [2022-11-21 13:59:37,137 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-11-21 13:59:37,138 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse0 .cse1 .cse2 .cse3 (<= .cse4 1) .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~x~0#1| .cse4) .cse10)) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse7 .cse8 .cse9 .cse10))) [2022-11-21 13:59:37,138 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~c~0#1| 0)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) .cse1 .cse2 (= |ULTIMATE.start_main_~r~0#1| 1) .cse3 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0)) (and .cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 13:59:37,138 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0)) [2022-11-21 13:59:37,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 13:59:37,139 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-11-21 13:59:37,139 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse0 .cse1 .cse2 .cse3 (<= .cse4 1) .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~x~0#1| .cse4) .cse10)) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse7 .cse8 .cse9 .cse10))) [2022-11-21 13:59:37,139 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-11-21 13:59:37,139 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 0) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-11-21 13:59:37,139 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-11-21 13:59:37,140 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-11-21 13:59:37,140 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-21 13:59:37,140 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-21 13:59:37,140 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-21 13:59:37,140 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-11-21 13:59:37,141 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (let ((.cse4 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse0 .cse1 .cse2 .cse3 (<= .cse4 1) .cse5 .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~x~0#1| .cse4) .cse10)) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6 (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) .cse7 .cse8 .cse9 .cse10))) [2022-11-21 13:59:37,141 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-11-21 13:59:37,141 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-11-21 13:59:37,141 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-21 13:59:37,141 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-21 13:59:37,141 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-21 13:59:37,142 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-21 13:59:37,142 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-21 13:59:37,142 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-21 13:59:37,142 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-21 13:59:37,142 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-21 13:59:37,142 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-21 13:59:37,143 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-21 13:59:37,146 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:37,148 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:59:37,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:59:37 BoogieIcfgContainer [2022-11-21 13:59:37,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:59:37,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:59:37,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:59:37,166 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:59:37,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:16" (3/4) ... [2022-11-21 13:59:37,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:59:37,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-21 13:59:37,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-21 13:59:37,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-21 13:59:37,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 13:59:37,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:59:37,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 13:59:37,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:59:37,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:59:37,225 INFO L158 Benchmark]: Toolchain (without parser) took 21057.81ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 113.0MB in the beginning and 104.1MB in the end (delta: 9.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,226 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:59:37,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.43ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 102.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.86ms. Allocated memory is still 144.7MB. Free memory was 102.0MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,229 INFO L158 Benchmark]: Boogie Preprocessor took 24.33ms. Allocated memory is still 144.7MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:59:37,230 INFO L158 Benchmark]: RCFGBuilder took 329.76ms. Allocated memory is still 144.7MB. Free memory was 99.4MB in the beginning and 87.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,230 INFO L158 Benchmark]: TraceAbstraction took 20337.28ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.3MB in the beginning and 107.2MB in the end (delta: -20.9MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,231 INFO L158 Benchmark]: Witness Printer took 59.40ms. Allocated memory is still 174.1MB. Free memory was 107.2MB in the beginning and 104.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:59:37,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.43ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 102.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.86ms. Allocated memory is still 144.7MB. Free memory was 102.0MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.33ms. Allocated memory is still 144.7MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 329.76ms. Allocated memory is still 144.7MB. Free memory was 99.4MB in the beginning and 87.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 20337.28ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.3MB in the beginning and 107.2MB in the end (delta: -20.9MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. * Witness Printer took 59.40ms. Allocated memory is still 174.1MB. Free memory was 107.2MB in the beginning and 104.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 13]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.3s, OverallIterations: 11, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 1619 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1232 mSDsCounter, 234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2420 IncrementalHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 234 mSolverCounterUnsat, 387 mSDtfsCounter, 2420 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1179 GetRequests, 1002 SyntacticMatches, 11 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=7, InterpolantAutomatonStates: 113, 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, 11 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 75 PreInvPairs, 105 NumberOfFragments, 737 HoareAnnotationTreeSize, 75 FomulaSimplifications, 420 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 2217 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1103 ConstructedInterpolants, 0 QuantifiedInterpolants, 4055 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1844 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 2108/2384 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((a == c + b * k && yy == y * y) && p == 1) && 1 <= y) && b == y) && b + c <= 1) && r == 0) && q == 0) && 1 <= x) && y <= 1) && a == x) && x <= b + c) && s == 1) || (((((((((((((yy == y * y && p == 1) && 1 <= y) && b == y) && c <= 1) && 1 <= c) && r == 0) && q == 0) && k == 0) && x <= 1) && 1 <= x) && y <= 1) && a == x) && s == 1) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((c == 0 && p == 0) && 1 <= y) && a == y) && b == 0) && x <= 1) && 1 <= x) && r == 1) && y <= 1) && s * y + q * x == 0) || (((((((((((c == 0 && yy == y * y) && p == 1) && b == y) && 1 <= b) && r == 0) && q == 0) && x <= 1) && 1 <= x) && y <= 1) && a == x) && s == 1) RESULT: Ultimate proved your program to be correct! [2022-11-21 13:59:37,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2c30a1-38a2-43d0-8c8a-de0d83f06374/bin/uautomizer-vX5HgA9Q3a/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