./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/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_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/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_998bd44d-4971-4da9-bffc-4d4408fbf704/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 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 --- 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 13:58:57,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:58:57,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:58:57,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:58:57,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:58:57,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:58:57,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:58:57,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:58:57,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:58:57,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:58:57,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:58:57,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:58:57,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:58:57,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:58:57,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:58:57,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:58:57,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:58:57,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:58:57,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:58:57,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:58:57,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:58:57,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:58:57,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:58:57,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:58:57,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:58:57,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:58:57,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:58:57,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:58:57,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:58:57,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:58:57,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:58:57,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:58:57,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:58:57,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:58:57,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:58:57,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:58:57,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:58:57,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:58:57,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:58:57,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:58:57,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:58:57,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:58:57,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:58:57,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:58:57,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:58:57,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:58:57,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:58:57,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:58:57,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:58:57,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:58:57,445 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:58:57,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:58:57,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:58:57,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:58:57,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:58:57,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:58:57,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:58:57,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:58:57,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:58:57,449 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:58:57,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:58:57,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:58:57,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:58:57,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:58:57,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:58:57,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:58:57,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:57,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:58:57,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:58:57,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:58:57,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:58:57,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:58:57,454 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:58:57,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:58:57,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:58:57,455 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_998bd44d-4971-4da9-bffc-4d4408fbf704/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 [2022-11-21 13:58:57,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:58:57,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:58:57,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:58:57,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:58:57,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:58:57,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2022-11-21 13:59:01,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:59:01,797 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:59:01,798 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/sv-benchmarks/c/recursive/recHanoi03-2.c [2022-11-21 13:59:01,806 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/data/308115565/adbb09f7865f45acb44dec41b825c06f/FLAGe6a522e43 [2022-11-21 13:59:01,833 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/data/308115565/adbb09f7865f45acb44dec41b825c06f [2022-11-21 13:59:01,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:59:01,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:59:01,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:01,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:59:01,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:59:01,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7539314c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:01, skipping insertion in model container [2022-11-21 13:59:01,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:59:01" (1/1) ... [2022-11-21 13:59:01,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:59:01,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:59:02,154 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_998bd44d-4971-4da9-bffc-4d4408fbf704/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2022-11-21 13:59:02,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:02,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:59:02,259 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_998bd44d-4971-4da9-bffc-4d4408fbf704/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2022-11-21 13:59:02,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:59:02,289 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:59:02,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02 WrapperNode [2022-11-21 13:59:02,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:59:02,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:02,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:59:02,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:59:02,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,331 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-11-21 13:59:02,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:59:02,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:59:02,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:59:02,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:59:02,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,363 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:59:02,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:59:02,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:59:02,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:59:02,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (1/1) ... [2022-11-21 13:59:02,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:59:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:02,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:59:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:59:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:59:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-21 13:59:02,479 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-21 13:59:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:59:02,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:59:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:59:02,574 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:59:02,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:59:02,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:59:02,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:59:02,738 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:59:02,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:02 BoogieIcfgContainer [2022-11-21 13:59:02,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:59:02,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:59:02,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:59:02,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:59:02,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:59:01" (1/3) ... [2022-11-21 13:59:02,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348cfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:02, skipping insertion in model container [2022-11-21 13:59:02,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:59:02" (2/3) ... [2022-11-21 13:59:02,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2348cfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:59:02, skipping insertion in model container [2022-11-21 13:59:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:02" (3/3) ... [2022-11-21 13:59:02,754 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2022-11-21 13:59:02,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:59:02,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:59:02,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:59:02,888 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;@188bf7a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:59:02,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:59:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 13:59:02,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 13:59:02,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:02,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:02,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2022-11-21 13:59:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:02,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949864232] [2022-11-21 13:59:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:02,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:03,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949864232] [2022-11-21 13:59:03,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949864232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:03,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:03,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:59:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088669148] [2022-11-21 13:59:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:03,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:59:03,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:59:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:59:03,637 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 13:59:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:03,826 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-21 13:59:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:59:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-21 13:59:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:03,841 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:59:03,842 INFO L226 Difference]: Without dead ends: 16 [2022-11-21 13:59:03,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:59:03,853 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:03,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-21 13:59:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-21 13:59:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 13:59:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-21 13:59:03,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-11-21 13:59:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:03,906 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-21 13:59:03,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 13:59:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-21 13:59:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:59:03,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:03,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:59:03,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2022-11-21 13:59:03,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:03,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905949011] [2022-11-21 13:59:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:59:04,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:04,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905949011] [2022-11-21 13:59:04,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905949011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:04,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411512073] [2022-11-21 13:59:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:04,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:04,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:04,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:59:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 13:59:04,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:59:04,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:59:05,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411512073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:05,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:59:05,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2022-11-21 13:59:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980973233] [2022-11-21 13:59:05,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 13:59:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 13:59:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:59:05,546 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-21 13:59:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:05,750 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-21 13:59:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:59:05,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 17 [2022-11-21 13:59:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:05,752 INFO L225 Difference]: With dead ends: 28 [2022-11-21 13:59:05,752 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 13:59:05,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:59:05,754 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:05,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 61 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 13:59:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-21 13:59:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:59:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-21 13:59:05,762 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-11-21 13:59:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:05,762 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-21 13:59:05,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-21 13:59:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-21 13:59:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 13:59:05,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:05,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:05,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:05,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 13:59:05,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:05,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2022-11-21 13:59:05,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:05,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438721549] [2022-11-21 13:59:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:05,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 13:59:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:06,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438721549] [2022-11-21 13:59:06,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438721549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602294712] [2022-11-21 13:59:06,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:59:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:06,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:06,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:59:06,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:59:06,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:06,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 13:59:06,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 13:59:07,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:59:08,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602294712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:08,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:59:08,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 31 [2022-11-21 13:59:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913211613] [2022-11-21 13:59:08,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:08,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 13:59:08,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 13:59:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2022-11-21 13:59:08,623 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 13:59:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:09,025 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-21 13:59:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:59:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) Word has length 29 [2022-11-21 13:59:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:09,027 INFO L225 Difference]: With dead ends: 37 [2022-11-21 13:59:09,027 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 13:59:09,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 13:59:09,030 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:09,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 115 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:59:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 13:59:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-21 13:59:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 13:59:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-21 13:59:09,039 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 29 [2022-11-21 13:59:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:09,040 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-21 13:59:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 13:59:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-21 13:59:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 13:59:09,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:09,043 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:09,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:09,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:09,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash 278928068, now seen corresponding path program 3 times [2022-11-21 13:59:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:09,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225396240] [2022-11-21 13:59:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:09,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:09,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-21 13:59:10,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:10,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225396240] [2022-11-21 13:59:10,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225396240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752292838] [2022-11-21 13:59:10,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:59:10,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:10,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:10,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:59:10,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-21 13:59:10,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 13:59:10,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 13:59:11,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 13:59:16,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752292838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:16,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:59:16,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 46 [2022-11-21 13:59:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669871867] [2022-11-21 13:59:16,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:16,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-21 13:59:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-21 13:59:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1834, Unknown=0, NotChecked=0, Total=2070 [2022-11-21 13:59:16,647 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2022-11-21 13:59:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:17,683 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-11-21 13:59:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 13:59:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) Word has length 47 [2022-11-21 13:59:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:17,686 INFO L225 Difference]: With dead ends: 55 [2022-11-21 13:59:17,686 INFO L226 Difference]: Without dead ends: 49 [2022-11-21 13:59:17,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 68 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=646, Invalid=4046, Unknown=0, NotChecked=0, Total=4692 [2022-11-21 13:59:17,690 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:17,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 269 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:59:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-21 13:59:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-21 13:59:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 13:59:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-11-21 13:59:17,719 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2022-11-21 13:59:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-11-21 13:59:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2022-11-21 13:59:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-11-21 13:59:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 13:59:17,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:17,728 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:17,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:17,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:17,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2030797316, now seen corresponding path program 4 times [2022-11-21 13:59:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:17,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267564132] [2022-11-21 13:59:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:20,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-21 13:59:21,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:21,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267564132] [2022-11-21 13:59:21,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267564132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:21,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048041850] [2022-11-21 13:59:21,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:59:21,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:59:21,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:59:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:59:21,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:59:21,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:59:21,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-21 13:59:21,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-21 13:59:23,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 13:59:50,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048041850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:50,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:59:50,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 76 [2022-11-21 13:59:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701388642] [2022-11-21 13:59:50,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-21 13:59:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-21 13:59:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=5134, Unknown=0, NotChecked=0, Total=5700 [2022-11-21 13:59:50,996 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2022-11-21 13:59:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:53,777 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2022-11-21 13:59:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-21 13:59:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) Word has length 83 [2022-11-21 13:59:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:53,780 INFO L225 Difference]: With dead ends: 91 [2022-11-21 13:59:53,780 INFO L226 Difference]: Without dead ends: 85 [2022-11-21 13:59:53,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 122 SyntacticMatches, 23 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1894, Invalid=13112, Unknown=0, NotChecked=0, Total=15006 [2022-11-21 13:59:53,797 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 151 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:53,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 608 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:59:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-21 13:59:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-21 13:59:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-21 13:59:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-11-21 13:59:53,834 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2022-11-21 13:59:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:53,835 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-11-21 13:59:53,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2022-11-21 13:59:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-11-21 13:59:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 13:59:53,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:53,847 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:53,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:54,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:59:54,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash -341184380, now seen corresponding path program 5 times [2022-11-21 13:59:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:54,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717704549] [2022-11-21 13:59:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:59:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:59:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 14:00:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2022-11-21 14:00:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:00:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717704549] [2022-11-21 14:00:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717704549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3231733] [2022-11-21 14:00:05,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 14:00:05,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:00:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:00:05,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:00:05,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 14:00:06,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-11-21 14:00:06,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:00:06,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-21 14:00:06,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2022-11-21 14:00:10,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:00:10,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3231733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:00:10,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:00:10,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [55] total 107 [2022-11-21 14:00:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569607341] [2022-11-21 14:00:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:00:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-21 14:00:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:00:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-21 14:00:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2022-11-21 14:00:10,481 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-21 14:00:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:10,878 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2022-11-21 14:00:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-21 14:00:10,879 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) Word has length 155 [2022-11-21 14:00:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:10,880 INFO L225 Difference]: With dead ends: 85 [2022-11-21 14:00:10,880 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 14:00:10,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2022-11-21 14:00:10,885 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:10,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 391 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:00:10,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 14:00:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 14:00:10,887 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 14:00:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 14:00:10,888 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2022-11-21 14:00:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:10,888 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 14:00:10,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-21 14:00:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 14:00:10,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 14:00:10,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 14:00:10,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-21 14:00:11,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 14:00:11,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 14:00:11,112 INFO L899 garLoopResultBuilder]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2022-11-21 14:00:11,113 INFO L902 garLoopResultBuilder]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2022-11-21 14:00:11,113 INFO L899 garLoopResultBuilder]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2022-11-21 14:00:11,113 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2022-11-21 14:00:11,113 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-21 14:00:11,113 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 36) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (not (< 31 |ULTIMATE.start_main_~n~0#1|)) [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 14:00:11,114 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-11-21 14:00:11,115 INFO L902 garLoopResultBuilder]: At program point L26(lines 26 37) the Hoare annotation is: true [2022-11-21 14:00:11,115 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2022-11-21 14:00:11,115 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-11-21 14:00:11,119 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1] [2022-11-21 14:00:11,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 14:00:11,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 02:00:11 BoogieIcfgContainer [2022-11-21 14:00:11,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 14:00:11,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 14:00:11,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 14:00:11,132 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 14:00:11,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:59:02" (3/4) ... [2022-11-21 14:00:11,136 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 14:00:11,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2022-11-21 14:00:11,153 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-21 14:00:11,157 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 14:00:11,157 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 14:00:11,158 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 14:00:11,188 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 14:00:11,188 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 14:00:11,189 INFO L158 Benchmark]: Toolchain (without parser) took 69346.80ms. Allocated memory was 184.5MB in the beginning and 559.9MB in the end (delta: 375.4MB). Free memory was 153.4MB in the beginning and 424.0MB in the end (delta: -270.6MB). Peak memory consumption was 104.4MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,189 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 14:00:11,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.75ms. Allocated memory is still 184.5MB. Free memory was 153.4MB in the beginning and 155.0MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.47ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 152.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,190 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 184.5MB. Free memory was 152.9MB in the beginning and 152.1MB in the end (delta: 768.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 14:00:11,191 INFO L158 Benchmark]: RCFGBuilder took 371.43ms. Allocated memory is still 184.5MB. Free memory was 152.1MB in the beginning and 142.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,191 INFO L158 Benchmark]: TraceAbstraction took 68385.78ms. Allocated memory was 184.5MB in the beginning and 559.9MB in the end (delta: 375.4MB). Free memory was 141.7MB in the beginning and 427.1MB in the end (delta: -285.5MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,192 INFO L158 Benchmark]: Witness Printer took 57.06ms. Allocated memory is still 559.9MB. Free memory was 427.1MB in the beginning and 424.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 14:00:11,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.75ms. Allocated memory is still 184.5MB. Free memory was 153.4MB in the beginning and 155.0MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.47ms. Allocated memory is still 184.5MB. Free memory was 155.0MB in the beginning and 152.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 184.5MB. Free memory was 152.9MB in the beginning and 152.1MB in the end (delta: 768.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.43ms. Allocated memory is still 184.5MB. Free memory was 152.1MB in the beginning and 142.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 68385.78ms. Allocated memory was 184.5MB in the beginning and 559.9MB in the end (delta: 375.4MB). Free memory was 141.7MB in the beginning and 427.1MB in the end (delta: -285.5MB). Peak memory consumption was 91.4MB. Max. memory is 16.1GB. * Witness Printer took 57.06ms. Allocated memory is still 559.9MB. Free memory was 427.1MB in the beginning and 424.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 35]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.3s, OverallIterations: 6, TraceHistogramMax: 25, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 1496 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1364 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2225 IncrementalHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 132 mSDtfsCounter, 2225 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 409 SyntacticMatches, 40 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6532 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=5, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 9 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 60.3s InterpolantComputationTime, 673 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 834 ConstructedInterpolants, 0 QuantifiedInterpolants, 3515 SizeOfPredicates, 36 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 3280/5280 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: 26]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-21 14:00:11,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998bd44d-4971-4da9-bffc-4d4408fbf704/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