./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R --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 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 --- 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-38b53e6 [2022-11-25 17:18:33,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:18:33,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:18:33,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:18:33,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:18:33,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:18:33,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:18:33,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:18:33,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:18:33,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:18:33,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:18:33,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:18:33,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:18:33,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:18:33,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:18:33,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:18:33,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:18:33,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:18:33,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:18:33,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:18:33,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:18:33,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:18:33,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:18:33,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:18:33,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:18:33,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:18:33,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:18:33,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:18:33,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:18:33,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:18:33,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:18:33,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:18:33,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:18:33,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:18:33,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:18:33,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:18:33,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:18:33,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:18:33,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:18:33,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:18:33,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:18:33,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:18:33,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:18:33,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:18:33,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:18:33,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:18:33,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:18:33,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:18:33,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:18:33,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:18:33,478 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:18:33,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:18:33,479 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:18:33,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:18:33,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:18:33,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:18:33,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:18:33,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:18:33,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:18:33,481 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:18:33,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:18:33,482 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:18:33,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:18:33,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:18:33,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:18:33,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:18:33,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:33,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:18:33,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:18:33,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:18:33,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:18:33,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:18:33,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:18:33,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:18:33,486 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:18:33,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:18:33,486 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 [2022-11-25 17:18:33,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:18:33,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:18:33,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:18:33,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:18:33,796 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:18:33,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2022-11-25 17:18:36,881 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:18:37,071 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:18:37,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2022-11-25 17:18:37,080 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/data/328cf8d58/bd58dc2fba4943ab8ee3be170fb54320/FLAGc0fabcd29 [2022-11-25 17:18:37,103 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/data/328cf8d58/bd58dc2fba4943ab8ee3be170fb54320 [2022-11-25 17:18:37,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:18:37,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:18:37,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:37,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:18:37,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:18:37,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7a6db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37, skipping insertion in model container [2022-11-25 17:18:37,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:18:37,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:18:37,288 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c[588,601] [2022-11-25 17:18:37,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:37,320 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:18:37,334 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c[588,601] [2022-11-25 17:18:37,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:18:37,359 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:18:37,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37 WrapperNode [2022-11-25 17:18:37,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:18:37,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:37,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:18:37,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:18:37,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,397 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-25 17:18:37,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:18:37,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:18:37,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:18:37,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:18:37,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,419 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:18:37,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:18:37,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:18:37,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:18:37,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (1/1) ... [2022-11-25 17:18:37,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:18:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:37,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:18:37,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:18:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:18:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:18:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:18:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:18:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:18:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:18:37,578 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:18:37,581 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:18:37,839 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:18:37,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:18:37,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:18:37,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:37 BoogieIcfgContainer [2022-11-25 17:18:37,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:18:37,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:18:37,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:18:37,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:18:37,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:18:37" (1/3) ... [2022-11-25 17:18:37,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5cb060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:37, skipping insertion in model container [2022-11-25 17:18:37,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:18:37" (2/3) ... [2022-11-25 17:18:37,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5cb060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:18:37, skipping insertion in model container [2022-11-25 17:18:37,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:37" (3/3) ... [2022-11-25 17:18:37,859 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound50.c [2022-11-25 17:18:37,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:18:37,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:18:37,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:18:37,960 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;@5ae66625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:18:37,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:18:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 17:18:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:18:37,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:37,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:37,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:37,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-11-25 17:18:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:37,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225469432] [2022-11-25 17:18:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:38,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225469432] [2022-11-25 17:18:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225469432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:38,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:18:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655340657] [2022-11-25 17:18:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:38,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:18:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:18:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:18:38,326 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:38,363 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-11-25 17:18:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:18:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:18:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:38,377 INFO L225 Difference]: With dead ends: 51 [2022-11-25 17:18:38,378 INFO L226 Difference]: Without dead ends: 23 [2022-11-25 17:18:38,383 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 [2022-11-25 17:18:38,388 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-11-25 17:18:38,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:18:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-25 17:18:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-25 17:18:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 17:18:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-11-25 17:18:38,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-11-25 17:18:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:38,447 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-11-25 17:18:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-11-25 17:18:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:18:38,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:38,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:38,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:18:38,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-11-25 17:18:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:38,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008545440] [2022-11-25 17:18:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:38,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:38,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008545440] [2022-11-25 17:18:38,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008545440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:38,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:38,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:18:38,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440845765] [2022-11-25 17:18:38,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:38,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:18:38,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:18:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:18:38,780 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:38,928 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-11-25 17:18:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:18:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:18:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:38,930 INFO L225 Difference]: With dead ends: 29 [2022-11-25 17:18:38,930 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 17:18:38,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:18:38,932 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:38,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:18:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 17:18:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-25 17:18:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 17:18:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-25 17:18:38,945 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-11-25 17:18:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:38,945 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-25 17:18:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-25 17:18:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 17:18:38,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:38,947 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:18:38,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-11-25 17:18:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:38,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31999581] [2022-11-25 17:18:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:38,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:38,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901811162] [2022-11-25 17:18:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:38,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:38,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:38,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:18:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:39,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:18:39,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:39,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:39,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:39,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31999581] [2022-11-25 17:18:39,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901811162] [2022-11-25 17:18:39,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901811162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:39,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:39,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-25 17:18:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096565305] [2022-11-25 17:18:39,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:18:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:18:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:18:39,452 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:18:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:40,104 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-25 17:18:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:18:40,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-11-25 17:18:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:40,108 INFO L225 Difference]: With dead ends: 52 [2022-11-25 17:18:40,108 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 17:18:40,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:40,110 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:40,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:18:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 17:18:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-25 17:18:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-25 17:18:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2022-11-25 17:18:40,151 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2022-11-25 17:18:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:40,152 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2022-11-25 17:18:40,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:18:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2022-11-25 17:18:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 17:18:40,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:40,154 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:40,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:40,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-11-25 17:18:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16344416] [2022-11-25 17:18:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:40,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505973875] [2022-11-25 17:18:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:40,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:40,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:40,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:40,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:18:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:40,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:18:40,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:18:40,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:18:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16344416] [2022-11-25 17:18:40,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505973875] [2022-11-25 17:18:40,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505973875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:40,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:40,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-25 17:18:40,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252752841] [2022-11-25 17:18:40,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:18:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:18:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:18:40,746 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 17:18:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:41,140 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-11-25 17:18:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:18:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2022-11-25 17:18:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:41,143 INFO L225 Difference]: With dead ends: 54 [2022-11-25 17:18:41,143 INFO L226 Difference]: Without dead ends: 52 [2022-11-25 17:18:41,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:41,144 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:41,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:18:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-25 17:18:41,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-25 17:18:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-25 17:18:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-25 17:18:41,176 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2022-11-25 17:18:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:41,177 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-25 17:18:41,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 17:18:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-25 17:18:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 17:18:41,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:41,179 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:41,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:41,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-11-25 17:18:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:41,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426429971] [2022-11-25 17:18:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:41,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:41,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856074420] [2022-11-25 17:18:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:41,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:41,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:18:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:41,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 17:18:41,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:18:41,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:18:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:42,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426429971] [2022-11-25 17:18:42,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:42,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856074420] [2022-11-25 17:18:42,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856074420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:42,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:42,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-25 17:18:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490897409] [2022-11-25 17:18:42,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:42,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:18:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:18:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:18:42,311 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 17:18:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:43,996 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-25 17:18:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:18:43,997 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2022-11-25 17:18:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:43,998 INFO L225 Difference]: With dead ends: 67 [2022-11-25 17:18:43,998 INFO L226 Difference]: Without dead ends: 58 [2022-11-25 17:18:43,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:44,000 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:44,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 17:18:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-25 17:18:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-25 17:18:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-25 17:18:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-11-25 17:18:44,021 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2022-11-25 17:18:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:44,022 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-11-25 17:18:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 17:18:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-11-25 17:18:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 17:18:44,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:44,023 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:44,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:18:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:44,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2022-11-25 17:18:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:44,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836944320] [2022-11-25 17:18:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:44,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:44,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968949872] [2022-11-25 17:18:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:44,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:44,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:18:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:18:44,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-25 17:18:44,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-25 17:18:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836944320] [2022-11-25 17:18:44,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968949872] [2022-11-25 17:18:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968949872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:44,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:44,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-25 17:18:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899109561] [2022-11-25 17:18:44,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:44,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:44,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:44,727 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-25 17:18:47,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:18:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:47,541 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-11-25 17:18:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:18:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2022-11-25 17:18:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:47,543 INFO L225 Difference]: With dead ends: 82 [2022-11-25 17:18:47,544 INFO L226 Difference]: Without dead ends: 80 [2022-11-25 17:18:47,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:18:47,545 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:47,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 281 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:18:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-25 17:18:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-25 17:18:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 17:18:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-25 17:18:47,603 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2022-11-25 17:18:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:47,604 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-25 17:18:47,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-25 17:18:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-25 17:18:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 17:18:47,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:47,609 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:47,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:47,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2022-11-25 17:18:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506329686] [2022-11-25 17:18:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:47,827 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:47,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387026191] [2022-11-25 17:18:47,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:18:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:47,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:47,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:18:47,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:18:47,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:18:47,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:18:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-25 17:18:48,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-25 17:18:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:48,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506329686] [2022-11-25 17:18:48,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387026191] [2022-11-25 17:18:48,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387026191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:48,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:48,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-25 17:18:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516671256] [2022-11-25 17:18:48,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:18:48,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:18:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:18:48,306 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 17:18:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:49,514 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-11-25 17:18:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:18:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2022-11-25 17:18:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:49,516 INFO L225 Difference]: With dead ends: 86 [2022-11-25 17:18:49,516 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 17:18:49,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:49,517 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:49,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 17:18:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 17:18:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-25 17:18:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-25 17:18:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-25 17:18:49,550 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2022-11-25 17:18:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:49,551 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-25 17:18:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 17:18:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-25 17:18:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 17:18:49,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:49,553 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:49,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:18:49,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-11-25 17:18:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663320026] [2022-11-25 17:18:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:49,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:49,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464850706] [2022-11-25 17:18:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:49,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:49,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:49,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:18:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:49,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 17:18:49,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-25 17:18:50,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-25 17:18:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663320026] [2022-11-25 17:18:50,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:50,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464850706] [2022-11-25 17:18:50,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464850706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:50,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:50,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-25 17:18:50,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153732270] [2022-11-25 17:18:50,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:50,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:50,524 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-25 17:18:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:51,534 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2022-11-25 17:18:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:18:51,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2022-11-25 17:18:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:51,536 INFO L225 Difference]: With dead ends: 95 [2022-11-25 17:18:51,537 INFO L226 Difference]: Without dead ends: 93 [2022-11-25 17:18:51,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:18:51,540 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:51,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 150 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:18:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-25 17:18:51,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-25 17:18:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-25 17:18:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-11-25 17:18:51,585 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2022-11-25 17:18:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:51,585 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-11-25 17:18:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-25 17:18:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-11-25 17:18:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 17:18:51,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:51,587 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:51,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:51,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-11-25 17:18:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:51,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267941474] [2022-11-25 17:18:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:51,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:51,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476757724] [2022-11-25 17:18:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:51,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:51,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:51,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:51,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:18:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:51,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 17:18:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-25 17:18:52,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:52,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267941474] [2022-11-25 17:18:52,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476757724] [2022-11-25 17:18:52,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476757724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:18:52,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:18:52,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-25 17:18:52,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118723487] [2022-11-25 17:18:52,448 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:52,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:18:52,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:52,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:18:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:52,451 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 17:18:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:52,815 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2022-11-25 17:18:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:18:52,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-11-25 17:18:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:52,817 INFO L225 Difference]: With dead ends: 97 [2022-11-25 17:18:52,818 INFO L226 Difference]: Without dead ends: 88 [2022-11-25 17:18:52,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:18:52,819 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:52,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:18:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-25 17:18:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-25 17:18:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 17:18:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2022-11-25 17:18:52,860 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2022-11-25 17:18:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:52,861 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2022-11-25 17:18:52,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 17:18:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2022-11-25 17:18:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 17:18:52,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:52,863 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:52,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:53,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:53,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2022-11-25 17:18:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:53,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729240700] [2022-11-25 17:18:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:53,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:53,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573766038] [2022-11-25 17:18:53,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:18:53,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:53,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:53,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:53,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:18:53,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 17:18:53,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:18:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 17:18:53,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:18:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-25 17:18:53,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:18:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-25 17:18:54,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:54,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729240700] [2022-11-25 17:18:54,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:18:54,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573766038] [2022-11-25 17:18:54,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573766038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:18:54,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:18:54,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-25 17:18:54,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549697837] [2022-11-25 17:18:54,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:18:54,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:18:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:54,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:18:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:18:54,232 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-25 17:18:59,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:18:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:18:59,683 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2022-11-25 17:18:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:18:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 78 [2022-11-25 17:18:59,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:18:59,685 INFO L225 Difference]: With dead ends: 110 [2022-11-25 17:18:59,686 INFO L226 Difference]: Without dead ends: 107 [2022-11-25 17:18:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:18:59,687 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:18:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 84 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 399 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 17:18:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-25 17:18:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-11-25 17:18:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 17:18:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2022-11-25 17:18:59,729 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2022-11-25 17:18:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:18:59,730 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2022-11-25 17:18:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-25 17:18:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2022-11-25 17:18:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 17:18:59,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:18:59,732 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:59,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:18:59,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:59,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:18:59,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-11-25 17:18:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369915031] [2022-11-25 17:18:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:59,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:18:59,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957908355] [2022-11-25 17:18:59,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:18:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:18:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:18:59,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:18:59,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:19:00,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:19:00,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:19:00,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 17:19:00,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-25 17:19:00,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369915031] [2022-11-25 17:19:01,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:19:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957908355] [2022-11-25 17:19:01,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957908355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:19:01,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:19:01,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-25 17:19:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775992729] [2022-11-25 17:19:01,592 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:19:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:19:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:19:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:19:01,595 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 17:19:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:19:02,049 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-11-25 17:19:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:19:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2022-11-25 17:19:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:19:02,051 INFO L225 Difference]: With dead ends: 111 [2022-11-25 17:19:02,051 INFO L226 Difference]: Without dead ends: 98 [2022-11-25 17:19:02,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:19:02,052 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:19:02,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:19:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-25 17:19:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-25 17:19:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 17:19:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2022-11-25 17:19:02,086 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2022-11-25 17:19:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:19:02,087 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2022-11-25 17:19:02,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-25 17:19:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2022-11-25 17:19:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 17:19:02,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:19:02,089 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:02,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:19:02,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:02,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:19:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2022-11-25 17:19:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978272092] [2022-11-25 17:19:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:02,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:19:02,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948066692] [2022-11-25 17:19:02,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:19:02,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:02,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:19:02,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:19:02,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:19:02,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:19:02,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-25 17:19:02,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-11-25 17:19:02,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-25 17:19:05,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978272092] [2022-11-25 17:19:05,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:19:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948066692] [2022-11-25 17:19:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948066692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:19:05,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:19:05,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2022-11-25 17:19:05,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115620884] [2022-11-25 17:19:05,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:19:05,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:19:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:19:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:19:05,368 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-25 17:19:10,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:19:10,039 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-11-25 17:19:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:19:10,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 121 [2022-11-25 17:19:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:19:10,041 INFO L225 Difference]: With dead ends: 127 [2022-11-25 17:19:10,041 INFO L226 Difference]: Without dead ends: 125 [2022-11-25 17:19:10,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:19:10,042 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:19:10,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 113 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 17:19:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-25 17:19:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2022-11-25 17:19:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 24 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 17:19:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2022-11-25 17:19:10,075 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 121 [2022-11-25 17:19:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:19:10,076 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2022-11-25 17:19:10,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-25 17:19:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2022-11-25 17:19:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 17:19:10,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:19:10,078 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:10,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-25 17:19:10,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:10,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:19:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-11-25 17:19:10,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:10,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106831522] [2022-11-25 17:19:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:10,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:19:10,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247124203] [2022-11-25 17:19:10,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:19:10,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:10,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:10,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:19:10,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:19:11,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 17:19:11,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:19:11,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 17:19:11,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-25 17:19:22,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-25 17:19:25,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106831522] [2022-11-25 17:19:25,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:19:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247124203] [2022-11-25 17:19:25,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247124203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:19:25,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:19:25,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-25 17:19:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935015419] [2022-11-25 17:19:25,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:19:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:19:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:19:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=247, Unknown=1, NotChecked=0, Total=306 [2022-11-25 17:19:25,953 INFO L87 Difference]: Start difference. First operand 106 states and 113 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-25 17:19:31,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:19:34,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:19:35,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:19:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:19:37,177 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-25 17:19:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:19:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 126 [2022-11-25 17:19:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:19:37,179 INFO L225 Difference]: With dead ends: 112 [2022-11-25 17:19:37,179 INFO L226 Difference]: Without dead ends: 108 [2022-11-25 17:19:37,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=116, Invalid=435, Unknown=1, NotChecked=0, Total=552 [2022-11-25 17:19:37,180 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 75 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:19:37,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 54 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 214 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-11-25 17:19:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-25 17:19:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-25 17:19:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 24 states have call successors, (24), 18 states have call predecessors, (24), 17 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 17:19:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2022-11-25 17:19:37,227 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 126 [2022-11-25 17:19:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:19:37,228 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2022-11-25 17:19:37,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-11-25 17:19:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2022-11-25 17:19:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 17:19:37,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:19:37,230 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:37,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:19:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:19:37,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:19:37,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1520954085, now seen corresponding path program 1 times [2022-11-25 17:19:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:37,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101892489] [2022-11-25 17:19:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:37,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:19:37,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972679750] [2022-11-25 17:19:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:37,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:19:37,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:19:37,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:19:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:19:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 17:19:37,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:19:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-25 17:19:39,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:19:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-25 17:19:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:56,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101892489] [2022-11-25 17:19:56,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:19:56,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972679750] [2022-11-25 17:19:56,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972679750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:19:56,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:19:56,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-11-25 17:19:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360145420] [2022-11-25 17:19:56,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:19:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:19:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:19:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=299, Unknown=3, NotChecked=0, Total=380 [2022-11-25 17:19:56,103 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 20 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) [2022-11-25 17:20:23,992 WARN L233 SmtUtils]: Spent 26.20s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:20:26,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:29,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:32,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:34,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:36,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:39,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:41,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:46,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:48,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:50,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:53,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:55,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:57,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:20:59,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:06,777 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:21:09,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:11,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:14,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:16,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:19,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:22,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:24,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:27,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:21:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:21:32,523 INFO L93 Difference]: Finished difference Result 165 states and 206 transitions. [2022-11-25 17:21:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:21:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) Word has length 131 [2022-11-25 17:21:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:21:32,526 INFO L225 Difference]: With dead ends: 165 [2022-11-25 17:21:32,526 INFO L226 Difference]: Without dead ends: 151 [2022-11-25 17:21:32,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=168, Invalid=585, Unknown=3, NotChecked=0, Total=756 [2022-11-25 17:21:32,528 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 38 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 145 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:21:32,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 119 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 858 Invalid, 22 Unknown, 0 Unchecked, 55.7s Time] [2022-11-25 17:21:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-25 17:21:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-25 17:21:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 49 states have call successors, (49), 20 states have call predecessors, (49), 19 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 17:21:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2022-11-25 17:21:32,624 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 131 [2022-11-25 17:21:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:21:32,625 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2022-11-25 17:21:32,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) [2022-11-25 17:21:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2022-11-25 17:21:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-25 17:21:32,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:21:32,629 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:32,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:32,835 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:21:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1512061602, now seen corresponding path program 2 times [2022-11-25 17:21:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189430350] [2022-11-25 17:21:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:32,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:21:32,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525527578] [2022-11-25 17:21:32,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:21:32,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:32,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:32,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:32,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:21:33,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:21:33,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:21:33,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-25 17:21:33,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 364 proven. 260 refuted. 0 times theorem prover too weak. 4236 trivial. 0 not checked. [2022-11-25 17:21:35,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:22:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 364 proven. 260 refuted. 0 times theorem prover too weak. 4236 trivial. 0 not checked. [2022-11-25 17:22:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189430350] [2022-11-25 17:22:03,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:22:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525527578] [2022-11-25 17:22:03,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525527578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:22:03,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:22:03,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2022-11-25 17:22:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489843153] [2022-11-25 17:22:03,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:22:03,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 17:22:03,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 17:22:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=821, Unknown=1, NotChecked=0, Total=1056 [2022-11-25 17:22:03,900 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand has 33 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 24 states have call successors, (98), 3 states have call predecessors, (98), 2 states have return successors, (96), 22 states have call predecessors, (96), 24 states have call successors, (96) [2022-11-25 17:23:59,312 WARN L233 SmtUtils]: Spent 1.86m on a formula simplification that was a NOOP. DAG size: 216 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:24:02,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:24:08,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:24:34,182 WARN L233 SmtUtils]: Spent 22.64s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:24:35,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:24:50,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:24:59,258 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:25:08,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:25:20,924 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:25:47,552 WARN L233 SmtUtils]: Spent 26.26s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:25:52,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:25:58,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:26:06,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:26:09,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:26:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:14,608 INFO L93 Difference]: Finished difference Result 267 states and 359 transitions. [2022-11-25 17:26:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 17:26:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 24 states have call successors, (98), 3 states have call predecessors, (98), 2 states have return successors, (96), 22 states have call predecessors, (96), 24 states have call successors, (96) Word has length 266 [2022-11-25 17:26:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:14,611 INFO L225 Difference]: With dead ends: 267 [2022-11-25 17:26:14,612 INFO L226 Difference]: Without dead ends: 241 [2022-11-25 17:26:14,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 229.9s TimeCoverageRelationStatistics Valid=696, Invalid=1847, Unknown=7, NotChecked=0, Total=2550 [2022-11-25 17:26:14,614 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 65 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 265 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:14,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 260 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2401 Invalid, 8 Unknown, 0 Unchecked, 27.2s Time] [2022-11-25 17:26:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-25 17:26:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-25 17:26:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-25 17:26:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 315 transitions. [2022-11-25 17:26:14,867 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 315 transitions. Word has length 266 [2022-11-25 17:26:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:14,868 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 315 transitions. [2022-11-25 17:26:14,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 2.074074074074074) internal successors, (56), 28 states have internal predecessors, (56), 24 states have call successors, (98), 3 states have call predecessors, (98), 2 states have return successors, (96), 22 states have call predecessors, (96), 24 states have call successors, (96) [2022-11-25 17:26:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 315 transitions. [2022-11-25 17:26:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-11-25 17:26:14,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:14,882 INFO L195 NwaCegarLoop]: trace histogram [99, 98, 98, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:14,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:15,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:26:15,094 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash -48749890, now seen corresponding path program 3 times [2022-11-25 17:26:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:15,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946056070] [2022-11-25 17:26:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:15,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:26:15,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948898738] [2022-11-25 17:26:15,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:26:15,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:15,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:15,118 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:15,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:26:15,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 17:26:15,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:15,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-25 17:26:15,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:34,619 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 18 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-25 17:27:40,878 WARN L837 $PredicateComparison]: unable to prove that (or (and (exists ((|aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|ULTIMATE.start_main_~a~0#1| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| Int)) (let ((.cse1 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (.cse0 (* 6 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|))) (and (< |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 6) (<= 0 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (not (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 10) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 18) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 9) .cse0 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 18)) (+ (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 36) (* .cse1 9) (* 3 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317|) 2) 8))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= (+ (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 36) (* .cse1 12) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 12)) (+ (* |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (* 36 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) 12 .cse0)) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) (= |c___VERIFIER_assert_#in~cond| 0)) (= |c___VERIFIER_assert_#in~cond| 1)) is different from false [2022-11-25 17:27:53,147 WARN L837 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond 1) (and (exists ((|aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| Int)) (let ((.cse1 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (.cse0 (* 6 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|))) (and (< |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 6) (<= 0 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (not (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 10) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 18) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 9) .cse0 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 18)) (+ (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 36) (* .cse1 9) (* 3 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317|) 2) 8))) (= (+ (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 36) (* .cse1 12) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 12)) (+ (* |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (* 36 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) 12 .cse0))))) (= c___VERIFIER_assert_~cond 0))) is different from false [2022-11-25 17:28:05,797 WARN L837 $PredicateComparison]: unable to prove that (exists ((|aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| Int)) (let ((.cse1 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (.cse0 (* 6 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|))) (and (< |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 6) (<= 0 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (not (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 10) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 18) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 9) .cse0 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 18)) (+ (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 36) (* .cse1 9) (* 3 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317|) 2) 8))) (= (+ (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 36) (* .cse1 12) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 12)) (+ (* |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (* 36 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) 12 .cse0))))) is different from false [2022-11-25 17:28:07,808 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| Int)) (let ((.cse1 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (.cse0 (* 6 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|))) (and (< |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 6) (<= 0 |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (not (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 10) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 18) (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 9) .cse0 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 18)) (+ (* (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) 36) (* .cse1 9) (* 3 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317|) 2) 8))) (= (+ (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| 36) (* .cse1 12) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_317| 12)) (+ (* |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_mod_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|) (* 36 (* |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62| |aux_div_v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_331_62|)) 12 .cse0))))) is different from true [2022-11-25 17:28:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20405 backedges. 2520 proven. 105 refuted. 0 times theorem prover too weak. 17772 trivial. 8 not checked. [2022-11-25 17:28:07,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:28:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20405 backedges. 1699 proven. 52 refuted. 0 times theorem prover too weak. 18654 trivial. 0 not checked. [2022-11-25 17:28:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:28:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946056070] [2022-11-25 17:28:35,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:28:35,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948898738] [2022-11-25 17:28:35,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948898738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:28:35,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:28:35,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2022-11-25 17:28:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943553700] [2022-11-25 17:28:35,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:28:35,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:28:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:28:35,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:28:35,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=286, Unknown=13, NotChecked=114, Total=506 [2022-11-25 17:28:35,127 INFO L87 Difference]: Start difference. First operand 241 states and 315 transitions. Second operand has 23 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (35), 13 states have call predecessors, (35), 11 states have call successors, (35) [2022-11-25 17:28:37,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:28:44,198 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 71 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:28:47,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:28:48,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:28:50,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:28:59,726 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 74 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:29:01,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:03,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:05,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:07,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:09,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:11,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:13,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:14,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:16,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:18,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:21,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-11-25 17:29:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:24,316 INFO L93 Difference]: Finished difference Result 241 states and 315 transitions. [2022-11-25 17:29:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:29:24,317 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (35), 13 states have call predecessors, (35), 11 states have call successors, (35) Word has length 536 [2022-11-25 17:29:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:24,318 INFO L225 Difference]: With dead ends: 241 [2022-11-25 17:29:24,318 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 17:29:24,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1052 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 69.4s TimeCoverageRelationStatistics Valid=148, Invalid=500, Unknown=14, NotChecked=150, Total=812 [2022-11-25 17:29:24,320 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 49 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:24,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 53 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 208 Invalid, 9 Unknown, 99 Unchecked, 31.7s Time] [2022-11-25 17:29:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 17:29:24,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 17:29:24,322 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) [2022-11-25 17:29:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 17:29:24,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 536 [2022-11-25 17:29:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:24,322 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 17:29:24,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (35), 13 states have call predecessors, (35), 11 states have call successors, (35) [2022-11-25 17:29:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 17:29:24,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 17:29:24,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 17:29:24,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:29:24,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 17:29:44,079 WARN L233 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 450 DAG size of output: 59 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:29:50,745 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 393 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:30:08,630 WARN L233 SmtUtils]: Spent 17.88s on a formula simplification. DAG size of input: 441 DAG size of output: 66 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:30:29,598 WARN L233 SmtUtils]: Spent 20.96s on a formula simplification. DAG size of input: 441 DAG size of output: 66 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:30:43,173 WARN L233 SmtUtils]: Spent 13.56s on a formula simplification. DAG size of input: 450 DAG size of output: 59 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:31:02,845 WARN L233 SmtUtils]: Spent 19.67s on a formula simplification. DAG size of input: 441 DAG size of output: 58 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:31:08,627 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 395 DAG size of output: 43 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:31:36,651 WARN L233 SmtUtils]: Spent 27.96s on a formula simplification. DAG size of input: 396 DAG size of output: 68 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:31:51,472 WARN L233 SmtUtils]: Spent 14.82s on a formula simplification. DAG size of input: 396 DAG size of output: 63 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:32:24,343 WARN L233 SmtUtils]: Spent 32.87s on a formula simplification. DAG size of input: 441 DAG size of output: 66 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-25 17:32:24,347 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 17:32:24,347 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,348 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 3 |ULTIMATE.start_main_~z~0#1|)) (+ (* 3 .cse0) .cse1 (* |ULTIMATE.start_main_~y~0#1| 10) 10)) (= .cse0 (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-25 17:32:24,348 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-11-25 17:32:24,349 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 6 |ULTIMATE.start_main_~n~0#1|)) (.cse7 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse8 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| (+ .cse7 .cse8 1))) (.cse5 (<= |ULTIMATE.start_main_~a~0#1| 50)) (.cse0 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse1))) (.cse6 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse2 (= (+ .cse7 .cse8 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse0 (= 6 .cse1) .cse2) (and .cse3 .cse4 .cse5 .cse0 (= |ULTIMATE.start_main_~x~0#1| 8) .cse6 .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse6 (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) .cse2) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2022-11-25 17:32:24,349 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~x~0#1| 18) (* 30 |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-25 17:32:24,349 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-25 17:32:24,350 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-11-25 17:32:24,350 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,350 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,351 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,351 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-25 17:32:24,351 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 17:32:24,351 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-25 17:32:24,352 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-11-25 17:32:24,352 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-25 17:32:24,352 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-25 17:32:24,352 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2022-11-25 17:32:24,353 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-25 17:32:24,353 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,353 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~z~0#1|)) (.cse1 (* |ULTIMATE.start_main_~x~0#1| 18))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse1)) (or (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|))))) (<= |ULTIMATE.start_main_~a~0#1| 50) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (exists ((|ULTIMATE.start_main_~a~0#1| Int)) (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse0)))) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (+ 66 (* |ULTIMATE.start_main_~n~0#1| 48) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~y~0#1|) 6) (* (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 12)) (+ (* 6 |ULTIMATE.start_main_~z~0#1|) .cse1 (* 30 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-25 17:32:24,354 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-25 17:32:24,354 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-25 17:32:24,354 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-25 17:32:24,354 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-25 17:32:24,354 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-25 17:32:24,354 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-25 17:32:24,357 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-11-25 17:32:24,359 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:32:24,367 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,368 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,368 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,368 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,375 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,376 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,376 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,376 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:32:24 BoogieIcfgContainer [2022-11-25 17:32:24,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:32:24,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:32:24,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:32:24,379 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:32:24,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:18:37" (3/4) ... [2022-11-25 17:32:24,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:32:24,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-25 17:32:24,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-25 17:32:24,391 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 17:32:24,392 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:32:24,392 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:32:24,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((cond == 1 && y * z + 2 * z == 6 + y * 12 + x * 18) && (n <= a || x * z == x * 12 + 6 * (a * x))) && a <= 50) && z == 6 + 6 * n) && (\exists ULTIMATE.start_main_~a~0#1 : int :: (ULTIMATE.start_main_~a~0#1 <= 50 && 0 <= ULTIMATE.start_main_~a~0#1) && 2 * y + 6 * ULTIMATE.start_main_~a~0#1 + 10 == ULTIMATE.start_main_~a~0#1 * z + 2 * z)) && 0 <= a) && 66 + n * 48 + n * y * 6 + n * z * 12 == 6 * z + x * 18 + 30 * y [2022-11-25 17:32:24,436 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:32:24,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:32:24,437 INFO L158 Benchmark]: Toolchain (without parser) took 827328.49ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 92.9MB in the beginning and 97.0MB in the end (delta: -4.1MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,441 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 68.1MB in the beginning and 67.7MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:24,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.16ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 82.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.97ms. Allocated memory is still 138.4MB. Free memory was 82.0MB in the beginning and 80.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,442 INFO L158 Benchmark]: Boogie Preprocessor took 23.98ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 79.5MB in the end (delta: 858.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:24,443 INFO L158 Benchmark]: RCFGBuilder took 426.00ms. Allocated memory is still 138.4MB. Free memory was 79.1MB in the beginning and 67.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,444 INFO L158 Benchmark]: TraceAbstraction took 826526.00ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 66.9MB in the beginning and 100.1MB in the end (delta: -33.2MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,447 INFO L158 Benchmark]: Witness Printer took 58.26ms. Allocated memory is still 182.5MB. Free memory was 100.1MB in the beginning and 97.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:32:24,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory was 68.1MB in the beginning and 67.7MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.16ms. Allocated memory is still 138.4MB. Free memory was 92.9MB in the beginning and 82.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.97ms. Allocated memory is still 138.4MB. Free memory was 82.0MB in the beginning and 80.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.98ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 79.5MB in the end (delta: 858.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 426.00ms. Allocated memory is still 138.4MB. Free memory was 79.1MB in the beginning and 67.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 826526.00ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 66.9MB in the beginning and 100.1MB in the end (delta: -33.2MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * Witness Printer took 58.26ms. Allocated memory is still 182.5MB. Free memory was 100.1MB in the beginning and 97.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 826.4s, OverallIterations: 16, TraceHistogramMax: 99, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 426.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 179.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 140.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 341 mSDsluCounter, 1433 SdHoareTripleChecker+Invalid, 139.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 99 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 931 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6866 IncrementalHoareTripleChecker+Invalid, 7939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 931 mSolverCounterUnsat, 460 mSDtfsCounter, 6866 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3289 GetRequests, 3003 SyntacticMatches, 2 SemanticMatches, 284 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 361.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=15, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 28 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 164 PreInvPairs, 321 NumberOfFragments, 1182 HoareAnnotationTreeSize, 164 FomulaSimplifications, 13644 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 87585 FormulaSimplificationTreeSizeReductionInter, 177.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 213.1s InterpolantComputationTime, 1673 NumberOfCodeBlocks, 1093 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 3129 ConstructedInterpolants, 4 QuantifiedInterpolants, 21070 SizeOfPredicates, 70 NumberOfNonLiveVariables, 2569 ConjunctsInSsa, 526 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 58019/59296 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: 33]: Loop Invariant [2022-11-25 17:32:24,476 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,476 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,476 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,476 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,477 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] [2022-11-25 17:32:24,478 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~a~0#1,QUANTIFIED] Derived loop invariant: ((((((cond == 1 && y * z + 2 * z == 6 + y * 12 + x * 18) && (n <= a || x * z == x * 12 + 6 * (a * x))) && a <= 50) && z == 6 + 6 * n) && (\exists ULTIMATE.start_main_~a~0#1 : int :: (ULTIMATE.start_main_~a~0#1 <= 50 && 0 <= ULTIMATE.start_main_~a~0#1) && 2 * y + 6 * ULTIMATE.start_main_~a~0#1 + 10 == ULTIMATE.start_main_~a~0#1 * z + 2 * z)) && 0 <= a) && 66 + n * 48 + n * y * 6 + n * z * 12 == 6 * z + x * 18 + 30 * y - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-25 17:32:24,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6349e59c-b537-4a8e-85f9-6e2d2de0c77f/bin/uautomizer-ZsLfNo2U6R/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