./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc --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 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --- 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-5e519f3 [2022-11-02 20:56:30,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:30,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:30,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:30,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:30,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:30,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:30,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:30,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:30,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:30,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:30,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:30,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:30,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:30,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:30,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:30,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:30,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:30,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:30,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:30,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:30,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:30,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:30,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:30,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:30,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:30,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:30,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:30,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:30,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:30,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:30,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:30,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:30,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:30,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:30,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:30,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:30,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:30,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:30,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:30,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:30,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:56:30,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:30,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:30,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:30,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:30,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:30,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:30,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:30,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:30,612 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:30,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:30,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:56:30,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:30,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:56:30,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:30,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:30,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:30,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:30,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:56:30,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:30,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:30,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:30,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:30,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:30,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:30,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:30,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:30,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:30,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:30,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:30,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:30,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:30,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:30,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:30,621 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_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 [2022-11-02 20:56:30,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:31,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:31,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:31,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:31,030 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:31,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/loop-simple/nested_3.c [2022-11-02 20:56:31,111 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/data/c23c6e374/c45e90b234ef4713ad1d5d8f61b3a678/FLAGa1e75dd9a [2022-11-02 20:56:31,731 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:31,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/sv-benchmarks/c/loop-simple/nested_3.c [2022-11-02 20:56:31,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/data/c23c6e374/c45e90b234ef4713ad1d5d8f61b3a678/FLAGa1e75dd9a [2022-11-02 20:56:32,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/data/c23c6e374/c45e90b234ef4713ad1d5d8f61b3a678 [2022-11-02 20:56:32,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:32,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:32,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:32,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:32,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:32,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626698fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32, skipping insertion in model container [2022-11-02 20:56:32,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:32,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:32,372 WARN L230 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_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/sv-benchmarks/c/loop-simple/nested_3.c[784,797] [2022-11-02 20:56:32,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:32,394 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:32,416 WARN L230 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_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/sv-benchmarks/c/loop-simple/nested_3.c[784,797] [2022-11-02 20:56:32,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:32,436 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:32,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32 WrapperNode [2022-11-02 20:56:32,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:32,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:32,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:32,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:32,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,481 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-02 20:56:32,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:32,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:32,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:32,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:32,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:32,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:32,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:32,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:32,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (1/1) ... [2022-11-02 20:56:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:32,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:32,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:32,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:56:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:56:32,711 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:32,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:32,919 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:32,926 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:32,926 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:56:32,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:32 BoogieIcfgContainer [2022-11-02 20:56:32,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:32,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:32,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:32,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:32,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:32" (1/3) ... [2022-11-02 20:56:32,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9d33d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:32, skipping insertion in model container [2022-11-02 20:56:32,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:32" (2/3) ... [2022-11-02 20:56:32,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9d33d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:32, skipping insertion in model container [2022-11-02 20:56:32,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:32" (3/3) ... [2022-11-02 20:56:32,944 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_3.c [2022-11-02 20:56:32,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:32,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:56:33,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:33,075 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;@6b272390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:33,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:56:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:33,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:33,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:33,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 28726596, now seen corresponding path program 1 times [2022-11-02 20:56:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:33,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185143390] [2022-11-02 20:56:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185143390] [2022-11-02 20:56:33,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185143390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095229795] [2022-11-02 20:56:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:33,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:33,371 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 20:56:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,388 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2022-11-02 20:56:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:56:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,398 INFO L225 Difference]: With dead ends: 28 [2022-11-02 20:56:33,398 INFO L226 Difference]: Without dead ends: 11 [2022-11-02 20:56:33,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:33,405 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-02 20:56:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-02 20:56:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-02 20:56:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-02 20:56:33,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2022-11-02 20:56:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,492 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-02 20:56:33,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 20:56:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-02 20:56:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:56:33,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:56:33,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:33,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,496 INFO L85 PathProgramCache]: Analyzing trace with hash 28697766, now seen corresponding path program 1 times [2022-11-02 20:56:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:33,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507354297] [2022-11-02 20:56:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:33,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507354297] [2022-11-02 20:56:33,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507354297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:33,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:33,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640327921] [2022-11-02 20:56:33,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,572 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-02 20:56:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,591 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-02 20:56:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:56:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,593 INFO L225 Difference]: With dead ends: 20 [2022-11-02 20:56:33,593 INFO L226 Difference]: Without dead ends: 17 [2022-11-02 20:56:33,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,595 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-02 20:56:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2022-11-02 20:56:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-11-02 20:56:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-02 20:56:33,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2022-11-02 20:56:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,602 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-02 20:56:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-02 20:56:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-02 20:56:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:56:33,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:33,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:33,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash 269702254, now seen corresponding path program 1 times [2022-11-02 20:56:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:33,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623355728] [2022-11-02 20:56:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623355728] [2022-11-02 20:56:33,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623355728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:33,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557902546] [2022-11-02 20:56:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,670 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 20:56:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,688 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2022-11-02 20:56:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:33,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:56:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,690 INFO L225 Difference]: With dead ends: 25 [2022-11-02 20:56:33,691 INFO L226 Difference]: Without dead ends: 16 [2022-11-02 20:56:33,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,693 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:33,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-02 20:56:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2022-11-02 20:56:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-02 20:56:33,713 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2022-11-02 20:56:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,713 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-02 20:56:33,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 20:56:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-02 20:56:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:56:33,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:33,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:33,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 904437762, now seen corresponding path program 1 times [2022-11-02 20:56:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:33,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549984100] [2022-11-02 20:56:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549984100] [2022-11-02 20:56:33,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549984100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:33,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:33,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098449833] [2022-11-02 20:56:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:33,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,824 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-02 20:56:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:33,842 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-11-02 20:56:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:56:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:33,844 INFO L225 Difference]: With dead ends: 25 [2022-11-02 20:56:33,844 INFO L226 Difference]: Without dead ends: 15 [2022-11-02 20:56:33,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:33,847 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:33,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-02 20:56:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-02 20:56:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-02 20:56:33,854 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2022-11-02 20:56:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:33,854 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-02 20:56:33,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-02 20:56:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-02 20:56:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:56:33,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:33,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:33,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:33,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2012164800, now seen corresponding path program 1 times [2022-11-02 20:56:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:33,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150206405] [2022-11-02 20:56:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150206405] [2022-11-02 20:56:33,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150206405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638784145] [2022-11-02 20:56:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:33,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:33,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:33,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:34,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:34,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:34,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:34,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638784145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:34,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:34,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-02 20:56:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395303856] [2022-11-02 20:56:34,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:34,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:34,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:34,119 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-02 20:56:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:34,161 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-11-02 20:56:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:56:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:34,163 INFO L225 Difference]: With dead ends: 31 [2022-11-02 20:56:34,164 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 20:56:34,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:34,166 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:34,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 20:56:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-02 20:56:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-02 20:56:34,174 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2022-11-02 20:56:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:34,175 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-02 20:56:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-02 20:56:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-02 20:56:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:56:34,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:34,177 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:34,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:34,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:34,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash -924137478, now seen corresponding path program 2 times [2022-11-02 20:56:34,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:34,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098883462] [2022-11-02 20:56:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:56:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098883462] [2022-11-02 20:56:34,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098883462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559425069] [2022-11-02 20:56:34,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:56:34,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:34,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:34,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:34,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:56:34,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:34,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:34,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:34,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:34,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559425069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:34,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:34,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2022-11-02 20:56:34,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728019470] [2022-11-02 20:56:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:34,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:34,880 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-02 20:56:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:35,193 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2022-11-02 20:56:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:56:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:56:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:35,195 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:56:35,195 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 20:56:35,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:56:35,198 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:35,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:56:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 20:56:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-11-02 20:56:35,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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) [2022-11-02 20:56:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-02 20:56:35,221 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 19 [2022-11-02 20:56:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:35,222 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-02 20:56:35,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-11-02 20:56:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-02 20:56:35,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:56:35,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:35,224 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:35,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:56:35,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2025458834, now seen corresponding path program 3 times [2022-11-02 20:56:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:35,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056733466] [2022-11-02 20:56:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:56:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056733466] [2022-11-02 20:56:35,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056733466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:35,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901739437] [2022-11-02 20:56:35,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:56:35,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:35,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:35,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:35,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:56:35,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:56:35,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:35,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:56:35,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:56:35,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:56:35,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901739437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:35,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:35,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-02 20:56:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31347593] [2022-11-02 20:56:35,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:35,874 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-02 20:56:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:35,955 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2022-11-02 20:56:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-02 20:56:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:35,958 INFO L225 Difference]: With dead ends: 141 [2022-11-02 20:56:35,958 INFO L226 Difference]: Without dead ends: 138 [2022-11-02 20:56:35,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:35,960 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:35,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 43 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-02 20:56:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-02 20:56:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 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) [2022-11-02 20:56:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2022-11-02 20:56:36,007 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 38 [2022-11-02 20:56:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:36,012 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2022-11-02 20:56:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-02 20:56:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2022-11-02 20:56:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-02 20:56:36,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:36,020 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-02 20:56:36,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:36,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:36,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash 128554662, now seen corresponding path program 4 times [2022-11-02 20:56:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:36,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504797118] [2022-11-02 20:56:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 1063 proven. 89 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-11-02 20:56:36,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504797118] [2022-11-02 20:56:36,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504797118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816228374] [2022-11-02 20:56:36,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:56:36,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:36,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:36,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:36,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:56:36,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:36,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:56:36,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 1063 proven. 89 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-11-02 20:56:36,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 1063 proven. 89 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-11-02 20:56:36,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816228374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:36,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:36,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-02 20:56:36,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620503143] [2022-11-02 20:56:36,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:36,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:36,820 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2022-11-02 20:56:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:36,903 INFO L93 Difference]: Finished difference Result 482 states and 535 transitions. [2022-11-02 20:56:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-02 20:56:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:36,907 INFO L225 Difference]: With dead ends: 482 [2022-11-02 20:56:36,907 INFO L226 Difference]: Without dead ends: 378 [2022-11-02 20:56:36,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:36,909 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:36,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-02 20:56:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-02 20:56:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.0769230769230769) internal successors, (406), 377 states have internal predecessors, (406), 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) [2022-11-02 20:56:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 406 transitions. [2022-11-02 20:56:36,958 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 406 transitions. Word has length 137 [2022-11-02 20:56:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:36,959 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 406 transitions. [2022-11-02 20:56:36,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2022-11-02 20:56:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 406 transitions. [2022-11-02 20:56:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-02 20:56:36,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:36,967 INFO L195 NwaCegarLoop]: trace histogram [144, 144, 24, 24, 24, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-02 20:56:37,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:56:37,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash 382291622, now seen corresponding path program 5 times [2022-11-02 20:56:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881846933] [2022-11-02 20:56:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24994 backedges. 0 proven. 18886 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2022-11-02 20:56:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:38,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881846933] [2022-11-02 20:56:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881846933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:38,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540124873] [2022-11-02 20:56:38,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:56:38,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:38,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:56:38,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2022-11-02 20:56:38,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:38,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:38,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24994 backedges. 0 proven. 18886 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2022-11-02 20:56:39,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 24994 backedges. 0 proven. 18886 refuted. 0 times theorem prover too weak. 6108 trivial. 0 not checked. [2022-11-02 20:56:39,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540124873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:39,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:39,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-11-02 20:56:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400107882] [2022-11-02 20:56:39,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:39,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:39,925 INFO L87 Difference]: Start difference. First operand 378 states and 406 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 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) [2022-11-02 20:56:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:40,020 INFO L93 Difference]: Finished difference Result 567 states and 610 transitions. [2022-11-02 20:56:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2022-11-02 20:56:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:40,029 INFO L225 Difference]: With dead ends: 567 [2022-11-02 20:56:40,030 INFO L226 Difference]: Without dead ends: 564 [2022-11-02 20:56:40,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 748 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:40,034 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:40,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-02 20:56:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-11-02 20:56:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.0763765541740675) internal successors, (606), 563 states have internal predecessors, (606), 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) [2022-11-02 20:56:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 606 transitions. [2022-11-02 20:56:40,127 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 606 transitions. Word has length 377 [2022-11-02 20:56:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:40,129 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 606 transitions. [2022-11-02 20:56:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 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) [2022-11-02 20:56:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 606 transitions. [2022-11-02 20:56:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2022-11-02 20:56:40,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:40,153 INFO L195 NwaCegarLoop]: trace histogram [216, 216, 36, 36, 36, 6, 6, 6, 1, 1, 1, 1, 1] [2022-11-02 20:56:40,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:56:40,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:40,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1072389210, now seen corresponding path program 6 times [2022-11-02 20:56:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:40,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639109904] [2022-11-02 20:56:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 56373 backedges. 0 proven. 48558 refuted. 0 times theorem prover too weak. 7815 trivial. 0 not checked. [2022-11-02 20:56:43,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:43,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639109904] [2022-11-02 20:56:43,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639109904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:43,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776412438] [2022-11-02 20:56:43,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:56:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:43,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:43,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:56:43,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-11-02 20:56:43,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:56:43,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:43,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56373 backedges. 16183 proven. 0 refuted. 0 times theorem prover too weak. 40190 trivial. 0 not checked. [2022-11-02 20:56:44,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:44,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776412438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:44,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:44,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [26] total 26 [2022-11-02 20:56:44,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823901893] [2022-11-02 20:56:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:44,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:56:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:56:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:56:44,335 INFO L87 Difference]: Start difference. First operand 564 states and 606 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2022-11-02 20:56:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:44,439 INFO L93 Difference]: Finished difference Result 564 states and 606 transitions. [2022-11-02 20:56:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:56:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 563 [2022-11-02 20:56:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:44,441 INFO L225 Difference]: With dead ends: 564 [2022-11-02 20:56:44,441 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:56:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 558 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:56:44,447 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:44,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:56:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:56:44,450 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) [2022-11-02 20:56:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:56:44,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 563 [2022-11-02 20:56:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:44,450 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:56:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2022-11-02 20:56:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:56:44,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:56:44,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:56:44,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:56:44,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 20:56:50,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 20:56:50,894 INFO L902 garLoopResultBuilder]: At program point L31(lines 15 32) the Hoare annotation is: true [2022-11-02 20:56:50,894 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-02 20:56:50,894 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2022-11-02 20:56:50,895 INFO L895 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 5) (<= |ULTIMATE.start_main_~b~0#1| 5) (<= |ULTIMATE.start_main_~c~0#1| 6)) [2022-11-02 20:56:50,895 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2022-11-02 20:56:50,895 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 6) (< 5 |ULTIMATE.start_main_~b~0#1|) (< 5 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 6) (<= |ULTIMATE.start_main_~c~0#1| 6)) [2022-11-02 20:56:50,895 INFO L899 garLoopResultBuilder]: For program point L21-4(lines 15 32) no Hoare annotation was computed. [2022-11-02 20:56:50,895 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 20:56:50,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 20:56:50,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 20:56:50,896 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2022-11-02 20:56:50,896 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2022-11-02 20:56:50,896 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2022-11-02 20:56:50,896 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 26) the Hoare annotation is: (and (< 5 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 5) (<= |ULTIMATE.start_main_~b~0#1| 6) (<= |ULTIMATE.start_main_~c~0#1| 6)) [2022-11-02 20:56:50,899 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2022-11-02 20:56:50,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:56:50,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:56:50 BoogieIcfgContainer [2022-11-02 20:56:50,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:56:50,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:56:50,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:56:50,920 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:56:50,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:32" (3/4) ... [2022-11-02 20:56:50,924 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:56:50,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-02 20:56:50,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-02 20:56:50,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:56:50,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:56:50,973 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:56:50,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:56:50,974 INFO L158 Benchmark]: Toolchain (without parser) took 18878.85ms. Allocated memory was 94.4MB in the beginning and 243.3MB in the end (delta: 148.9MB). Free memory was 58.4MB in the beginning and 135.9MB in the end (delta: -77.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,974 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:56:50,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.67ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 70.4MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.73ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 69.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,976 INFO L158 Benchmark]: Boogie Preprocessor took 43.71ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 67.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,976 INFO L158 Benchmark]: RCFGBuilder took 400.30ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 58.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,977 INFO L158 Benchmark]: TraceAbstraction took 17987.53ms. Allocated memory was 94.4MB in the beginning and 243.3MB in the end (delta: 148.9MB). Free memory was 57.9MB in the beginning and 137.9MB in the end (delta: -80.0MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,977 INFO L158 Benchmark]: Witness Printer took 53.37ms. Allocated memory is still 243.3MB. Free memory was 137.9MB in the beginning and 135.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:56:50,980 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 94.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.67ms. Allocated memory is still 94.4MB. Free memory was 58.2MB in the beginning and 70.4MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.73ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 69.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.71ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 67.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.30ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 58.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17987.53ms. Allocated memory was 94.4MB in the beginning and 243.3MB in the end (delta: 148.9MB). Free memory was 57.9MB in the beginning and 137.9MB in the end (delta: -80.0MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. * Witness Printer took 53.37ms. Allocated memory is still 243.3MB. Free memory was 137.9MB in the beginning and 135.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.9s, OverallIterations: 10, TraceHistogramMax: 216, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 291 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 186 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 194 IncrementalHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 105 mSDtfsCounter, 194 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1796 GetRequests, 1711 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 306 NumberOfFragments, 40 HoareAnnotationTreeSize, 4 FomulaSimplifications, 4983 FormulaSimplificationTreeSizeReduction, 3.4s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3142 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2323 NumberOfCodeBlocks, 2037 NumberOfCodeBlocksAsserted, 241 NumberOfCheckSat, 2886 ConstructedInterpolants, 0 QuantifiedInterpolants, 7483 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1531 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 91092/196614 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: 21]: Loop Invariant Derived loop invariant: (((a <= 6 && 5 < b) && 5 < c) && b <= 6) && c <= 6 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (a <= 5 && b <= 5) && c <= 6 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((5 < c && a <= 5) && b <= 6) && c <= 6 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-02 20:56:51,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517bb5d6-9288-4d3e-a5d4-6104c689e3ed/bin/uautomizer-Dbtcem3rbc/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