./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/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 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 --- 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 17:28:56,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:28:56,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:28:56,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:28:56,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:28:56,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:28:56,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:28:56,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:28:56,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:28:56,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:28:56,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:28:56,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:28:56,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:28:56,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:28:56,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:28:56,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:28:56,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:28:56,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:28:56,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:28:56,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:28:56,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:28:56,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:28:56,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:28:56,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:28:56,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:28:56,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:28:56,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:28:56,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:28:56,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:28:56,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:28:56,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:28:56,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:28:56,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:28:56,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:28:56,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:28:56,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:28:56,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:28:56,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:28:56,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:28:56,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:28:56,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:28:56,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:28:56,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:28:56,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:28:56,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:28:56,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:28:56,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:28:56,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:28:56,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:28:56,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:28:56,517 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:28:56,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:28:56,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:28:56,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:28:56,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:28:56,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:28:56,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:28:56,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:28:56,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:28:56,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:28:56,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:28:56,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:28:56,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:28:56,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:28:56,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:28:56,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:28:56,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:28:56,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:28:56,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:28:56,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:28:56,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:28:56,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:28:56,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:28:56,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:28:56,524 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:28:56,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:28:56,525 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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 [2022-11-25 17:28:56,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:28:56,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:28:56,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:28:56,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:28:56,918 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:28:56,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-25 17:29:00,320 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:29:00,693 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:29:00,694 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-25 17:29:00,709 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/data/80cb1db7e/68d929746cbc4ebea60a0af8d3e0a437/FLAG91de03d61 [2022-11-25 17:29:00,735 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/data/80cb1db7e/68d929746cbc4ebea60a0af8d3e0a437 [2022-11-25 17:29:00,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:29:00,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:29:00,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:29:00,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:29:00,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:29:00,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:29:00" (1/1) ... [2022-11-25 17:29:00,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acf7a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:00, skipping insertion in model container [2022-11-25 17:29:00,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:29:00" (1/1) ... [2022-11-25 17:29:00,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:29:00,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:29:01,133 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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-11-25 17:29:01,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:29:01,149 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:29:01,210 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_b9e8856a-c729-44bf-9e6f-04fc90323c2a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-11-25 17:29:01,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:29:01,227 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:29:01,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01 WrapperNode [2022-11-25 17:29:01,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:29:01,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:29:01,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:29:01,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:29:01,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,284 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 378 [2022-11-25 17:29:01,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:29:01,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:29:01,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:29:01,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:29:01,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:29:01,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:29:01,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:29:01,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:29:01,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (1/1) ... [2022-11-25 17:29:01,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:29:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:01,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:29:01,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:29:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:29:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-11-25 17:29:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-11-25 17:29:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 17:29:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 17:29:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-11-25 17:29:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-11-25 17:29:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-11-25 17:29:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-11-25 17:29:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-11-25 17:29:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-11-25 17:29:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 17:29:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 17:29:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:29:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:29:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:29:01,745 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:29:01,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:29:02,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:29:02,566 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:29:02,566 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:29:02,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:29:02 BoogieIcfgContainer [2022-11-25 17:29:02,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:29:02,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:29:02,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:29:02,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:29:02,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:29:00" (1/3) ... [2022-11-25 17:29:02,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648ee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:29:02, skipping insertion in model container [2022-11-25 17:29:02,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:29:01" (2/3) ... [2022-11-25 17:29:02,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648ee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:29:02, skipping insertion in model container [2022-11-25 17:29:02,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:29:02" (3/3) ... [2022-11-25 17:29:02,591 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-25 17:29:02,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:29:02,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:29:02,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:29:02,732 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;@2753f61f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:29:02,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:29:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 137 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-25 17:29:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 17:29:02,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:02,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:02,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 559867366, now seen corresponding path program 1 times [2022-11-25 17:29:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:02,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576932576] [2022-11-25 17:29:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,119 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 17:29:03,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576932576] [2022-11-25 17:29:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576932576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:03,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:03,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982211421] [2022-11-25 17:29:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:03,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:03,191 INFO L87 Difference]: Start difference. First operand has 177 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 137 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:29:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:03,320 INFO L93 Difference]: Finished difference Result 355 states and 611 transitions. [2022-11-25 17:29:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-25 17:29:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:03,344 INFO L225 Difference]: With dead ends: 355 [2022-11-25 17:29:03,347 INFO L226 Difference]: Without dead ends: 181 [2022-11-25 17:29:03,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:03,363 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 18 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:03,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 793 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-25 17:29:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2022-11-25 17:29:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 134 states have (on average 1.5522388059701493) internal successors, (208), 138 states have internal predecessors, (208), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-25 17:29:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 282 transitions. [2022-11-25 17:29:03,429 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 282 transitions. Word has length 15 [2022-11-25 17:29:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 282 transitions. [2022-11-25 17:29:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:29:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 282 transitions. [2022-11-25 17:29:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 17:29:03,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:03,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:03,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:29:03,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1518249102, now seen corresponding path program 1 times [2022-11-25 17:29:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:03,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360495267] [2022-11-25 17:29:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,517 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 17:29:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:03,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360495267] [2022-11-25 17:29:03,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360495267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:03,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:03,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53563504] [2022-11-25 17:29:03,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:03,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:03,544 INFO L87 Difference]: Start difference. First operand 179 states and 282 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:29:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:03,689 INFO L93 Difference]: Finished difference Result 371 states and 587 transitions. [2022-11-25 17:29:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-25 17:29:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:03,692 INFO L225 Difference]: With dead ends: 371 [2022-11-25 17:29:03,693 INFO L226 Difference]: Without dead ends: 195 [2022-11-25 17:29:03,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:03,695 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 25 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:03,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 814 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:29:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-25 17:29:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2022-11-25 17:29:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 149 states have internal predecessors, (222), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-25 17:29:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 298 transitions. [2022-11-25 17:29:03,744 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 298 transitions. Word has length 16 [2022-11-25 17:29:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:03,746 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 298 transitions. [2022-11-25 17:29:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:29:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 298 transitions. [2022-11-25 17:29:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 17:29:03,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:03,753 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:29:03,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2053060758, now seen corresponding path program 1 times [2022-11-25 17:29:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:03,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917963500] [2022-11-25 17:29:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:29:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917963500] [2022-11-25 17:29:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917963500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:03,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:03,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:29:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229488518] [2022-11-25 17:29:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:29:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:29:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:29:03,883 INFO L87 Difference]: Start difference. First operand 192 states and 298 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:29:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:03,918 INFO L93 Difference]: Finished difference Result 403 states and 633 transitions. [2022-11-25 17:29:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:29:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-25 17:29:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:03,923 INFO L225 Difference]: With dead ends: 403 [2022-11-25 17:29:03,923 INFO L226 Difference]: Without dead ends: 221 [2022-11-25 17:29:03,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:29:03,926 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 22 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:03,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 550 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-25 17:29:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2022-11-25 17:29:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.5238095238095237) internal successors, (224), 151 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-25 17:29:03,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 300 transitions. [2022-11-25 17:29:03,953 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 300 transitions. Word has length 24 [2022-11-25 17:29:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:03,953 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 300 transitions. [2022-11-25 17:29:03,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 17:29:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 300 transitions. [2022-11-25 17:29:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 17:29:03,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:03,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:03,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:29:03,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1605801767, now seen corresponding path program 1 times [2022-11-25 17:29:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:03,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615580260] [2022-11-25 17:29:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:29:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:04,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615580260] [2022-11-25 17:29:04,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615580260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:04,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:04,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043118652] [2022-11-25 17:29:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:04,203 INFO L87 Difference]: Start difference. First operand 194 states and 300 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:04,299 INFO L93 Difference]: Finished difference Result 476 states and 756 transitions. [2022-11-25 17:29:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-11-25 17:29:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:04,308 INFO L225 Difference]: With dead ends: 476 [2022-11-25 17:29:04,309 INFO L226 Difference]: Without dead ends: 298 [2022-11-25 17:29:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:04,317 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 116 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:04,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1162 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-25 17:29:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 198. [2022-11-25 17:29:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 154 states have internal predecessors, (227), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-25 17:29:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 304 transitions. [2022-11-25 17:29:04,348 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 304 transitions. Word has length 32 [2022-11-25 17:29:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:04,348 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 304 transitions. [2022-11-25 17:29:04,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 304 transitions. [2022-11-25 17:29:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 17:29:04,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:04,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:29:04,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1129595597, now seen corresponding path program 1 times [2022-11-25 17:29:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:04,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031461996] [2022-11-25 17:29:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:29:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,458 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 17:29:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:04,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031461996] [2022-11-25 17:29:04,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031461996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:04,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:04,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:29:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493580684] [2022-11-25 17:29:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:29:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:29:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:29:04,462 INFO L87 Difference]: Start difference. First operand 198 states and 304 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:29:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:04,553 INFO L93 Difference]: Finished difference Result 341 states and 530 transitions. [2022-11-25 17:29:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:29:04,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-25 17:29:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:04,556 INFO L225 Difference]: With dead ends: 341 [2022-11-25 17:29:04,556 INFO L226 Difference]: Without dead ends: 194 [2022-11-25 17:29:04,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:29:04,558 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 116 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:04,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1182 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-25 17:29:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-25 17:29:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.489795918367347) internal successors, (219), 151 states have internal predecessors, (219), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-25 17:29:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 295 transitions. [2022-11-25 17:29:04,580 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 295 transitions. Word has length 35 [2022-11-25 17:29:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:04,580 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 295 transitions. [2022-11-25 17:29:04,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:29:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 295 transitions. [2022-11-25 17:29:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 17:29:04,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:04,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:29:04,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1343681902, now seen corresponding path program 1 times [2022-11-25 17:29:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:04,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436136106] [2022-11-25 17:29:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:29:04,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:04,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436136106] [2022-11-25 17:29:04,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436136106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:04,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320574964] [2022-11-25 17:29:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:04,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:04,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:04,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:29:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:04,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:29:04,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:29:04,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:29:04,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320574964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:29:04,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:29:04,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-25 17:29:04,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400572641] [2022-11-25 17:29:04,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:04,951 INFO L87 Difference]: Start difference. First operand 194 states and 295 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:29:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:04,998 INFO L93 Difference]: Finished difference Result 436 states and 677 transitions. [2022-11-25 17:29:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-11-25 17:29:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:05,004 INFO L225 Difference]: With dead ends: 436 [2022-11-25 17:29:05,004 INFO L226 Difference]: Without dead ends: 253 [2022-11-25 17:29:05,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:05,010 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 90 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:05,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 567 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-25 17:29:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2022-11-25 17:29:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 194 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 17:29:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 374 transitions. [2022-11-25 17:29:05,045 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 374 transitions. Word has length 35 [2022-11-25 17:29:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:05,046 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 374 transitions. [2022-11-25 17:29:05,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:29:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 374 transitions. [2022-11-25 17:29:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:29:05,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:05,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:05,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:29:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:05,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1968918546, now seen corresponding path program 2 times [2022-11-25 17:29:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854102323] [2022-11-25 17:29:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 17:29:05,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:05,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854102323] [2022-11-25 17:29:05,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854102323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:05,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:05,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:05,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949241635] [2022-11-25 17:29:05,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:05,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:05,390 INFO L87 Difference]: Start difference. First operand 247 states and 374 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:05,448 INFO L93 Difference]: Finished difference Result 474 states and 738 transitions. [2022-11-25 17:29:05,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:05,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-25 17:29:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:05,453 INFO L225 Difference]: With dead ends: 474 [2022-11-25 17:29:05,453 INFO L226 Difference]: Without dead ends: 256 [2022-11-25 17:29:05,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:05,460 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 19 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:05,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 792 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-25 17:29:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2022-11-25 17:29:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 200 states have internal predecessors, (286), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-25 17:29:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2022-11-25 17:29:05,490 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 57 [2022-11-25 17:29:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2022-11-25 17:29:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2022-11-25 17:29:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 17:29:05,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:05,494 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:29:05,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -784911651, now seen corresponding path program 1 times [2022-11-25 17:29:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347166297] [2022-11-25 17:29:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 17:29:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:05,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347166297] [2022-11-25 17:29:05,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347166297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:05,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:05,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271240566] [2022-11-25 17:29:05,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:05,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:05,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:05,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:05,599 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:05,648 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2022-11-25 17:29:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-25 17:29:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:05,652 INFO L225 Difference]: With dead ends: 518 [2022-11-25 17:29:05,652 INFO L226 Difference]: Without dead ends: 293 [2022-11-25 17:29:05,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:05,655 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 24 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:05,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 806 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-25 17:29:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2022-11-25 17:29:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 232 states have internal predecessors, (323), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-25 17:29:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 425 transitions. [2022-11-25 17:29:05,673 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 425 transitions. Word has length 57 [2022-11-25 17:29:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:05,673 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 425 transitions. [2022-11-25 17:29:05,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:29:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 425 transitions. [2022-11-25 17:29:05,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 17:29:05,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:05,675 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:05,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:29:05,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1749980024, now seen corresponding path program 1 times [2022-11-25 17:29:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:05,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661050555] [2022-11-25 17:29:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:05,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 17:29:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:05,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661050555] [2022-11-25 17:29:05,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661050555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:05,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:05,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578306661] [2022-11-25 17:29:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:05,803 INFO L87 Difference]: Start difference. First operand 290 states and 425 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:05,847 INFO L93 Difference]: Finished difference Result 529 states and 789 transitions. [2022-11-25 17:29:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:05,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-11-25 17:29:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:05,851 INFO L225 Difference]: With dead ends: 529 [2022-11-25 17:29:05,852 INFO L226 Difference]: Without dead ends: 292 [2022-11-25 17:29:05,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:05,856 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:05,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1072 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-25 17:29:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-11-25 17:29:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 232 states have internal predecessors, (320), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-25 17:29:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2022-11-25 17:29:05,879 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 75 [2022-11-25 17:29:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:05,879 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2022-11-25 17:29:05,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:05,880 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2022-11-25 17:29:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 17:29:05,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:05,881 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:29:05,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:05,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1059319133, now seen corresponding path program 1 times [2022-11-25 17:29:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:05,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514600798] [2022-11-25 17:29:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-25 17:29:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514600798] [2022-11-25 17:29:06,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514600798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:06,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:06,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305490315] [2022-11-25 17:29:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:06,057 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:06,128 INFO L93 Difference]: Finished difference Result 566 states and 845 transitions. [2022-11-25 17:29:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:06,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-11-25 17:29:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:06,131 INFO L225 Difference]: With dead ends: 566 [2022-11-25 17:29:06,131 INFO L226 Difference]: Without dead ends: 334 [2022-11-25 17:29:06,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:06,133 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 25 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:06,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 806 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-25 17:29:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-11-25 17:29:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 265 states have (on average 1.3660377358490565) internal successors, (362), 269 states have internal predecessors, (362), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-25 17:29:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2022-11-25 17:29:06,156 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 104 [2022-11-25 17:29:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:06,157 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2022-11-25 17:29:06,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2022-11-25 17:29:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 17:29:06,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:06,165 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:06,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:29:06,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash 683313439, now seen corresponding path program 1 times [2022-11-25 17:29:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415552733] [2022-11-25 17:29:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-25 17:29:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415552733] [2022-11-25 17:29:06,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415552733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:06,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:06,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89442386] [2022-11-25 17:29:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:06,319 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:06,386 INFO L93 Difference]: Finished difference Result 592 states and 865 transitions. [2022-11-25 17:29:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:29:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-11-25 17:29:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:06,389 INFO L225 Difference]: With dead ends: 592 [2022-11-25 17:29:06,389 INFO L226 Difference]: Without dead ends: 325 [2022-11-25 17:29:06,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:06,391 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 15 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:06,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 765 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-25 17:29:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-11-25 17:29:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.3461538461538463) internal successors, (350), 264 states have internal predecessors, (350), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-25 17:29:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 456 transitions. [2022-11-25 17:29:06,411 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 456 transitions. Word has length 105 [2022-11-25 17:29:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:06,411 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 456 transitions. [2022-11-25 17:29:06,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:29:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 456 transitions. [2022-11-25 17:29:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 17:29:06,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:06,414 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:29:06,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1739189569, now seen corresponding path program 1 times [2022-11-25 17:29:06,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:06,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318895607] [2022-11-25 17:29:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-25 17:29:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:06,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318895607] [2022-11-25 17:29:06,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318895607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:06,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:06,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488313939] [2022-11-25 17:29:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:06,567 INFO L87 Difference]: Start difference. First operand 325 states and 456 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 17:29:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:06,606 INFO L93 Difference]: Finished difference Result 567 states and 814 transitions. [2022-11-25 17:29:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-11-25 17:29:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:06,609 INFO L225 Difference]: With dead ends: 567 [2022-11-25 17:29:06,609 INFO L226 Difference]: Without dead ends: 327 [2022-11-25 17:29:06,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:06,611 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:06,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1057 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-25 17:29:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2022-11-25 17:29:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.3346153846153845) internal successors, (347), 264 states have internal predecessors, (347), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-25 17:29:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 453 transitions. [2022-11-25 17:29:06,649 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 453 transitions. Word has length 124 [2022-11-25 17:29:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:06,650 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 453 transitions. [2022-11-25 17:29:06,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 17:29:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 453 transitions. [2022-11-25 17:29:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 17:29:06,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:06,652 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:29:06,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -844197338, now seen corresponding path program 1 times [2022-11-25 17:29:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:06,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930164749] [2022-11-25 17:29:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-25 17:29:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930164749] [2022-11-25 17:29:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930164749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:06,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784768949] [2022-11-25 17:29:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:06,794 INFO L87 Difference]: Start difference. First operand 325 states and 453 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 17:29:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:06,866 INFO L93 Difference]: Finished difference Result 530 states and 774 transitions. [2022-11-25 17:29:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:29:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-11-25 17:29:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:06,870 INFO L225 Difference]: With dead ends: 530 [2022-11-25 17:29:06,870 INFO L226 Difference]: Without dead ends: 323 [2022-11-25 17:29:06,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:06,872 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 13 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:06,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 733 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-25 17:29:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-25 17:29:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 259 states have (on average 1.332046332046332) internal successors, (345), 263 states have internal predecessors, (345), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-25 17:29:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 449 transitions. [2022-11-25 17:29:06,892 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 449 transitions. Word has length 157 [2022-11-25 17:29:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:06,892 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 449 transitions. [2022-11-25 17:29:06,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 17:29:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 449 transitions. [2022-11-25 17:29:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 17:29:06,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:06,896 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:06,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:29:06,897 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash -233735844, now seen corresponding path program 1 times [2022-11-25 17:29:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:06,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527780863] [2022-11-25 17:29:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-25 17:29:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-11-25 17:29:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:07,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527780863] [2022-11-25 17:29:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527780863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:07,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:07,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678441215] [2022-11-25 17:29:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:07,078 INFO L87 Difference]: Start difference. First operand 323 states and 449 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:29:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:07,153 INFO L93 Difference]: Finished difference Result 470 states and 670 transitions. [2022-11-25 17:29:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2022-11-25 17:29:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:07,157 INFO L225 Difference]: With dead ends: 470 [2022-11-25 17:29:07,157 INFO L226 Difference]: Without dead ends: 306 [2022-11-25 17:29:07,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:07,159 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 35 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:07,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 714 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-25 17:29:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-11-25 17:29:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 249 states have internal predecessors, (324), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-25 17:29:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 422 transitions. [2022-11-25 17:29:07,183 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 422 transitions. Word has length 176 [2022-11-25 17:29:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 422 transitions. [2022-11-25 17:29:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:29:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 422 transitions. [2022-11-25 17:29:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-25 17:29:07,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:07,188 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:07,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:29:07,188 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1725258332, now seen corresponding path program 1 times [2022-11-25 17:29:07,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367125222] [2022-11-25 17:29:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 17:29:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-25 17:29:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:07,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367125222] [2022-11-25 17:29:07,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367125222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:07,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:07,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270264102] [2022-11-25 17:29:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:07,434 INFO L87 Difference]: Start difference. First operand 306 states and 422 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:29:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:07,508 INFO L93 Difference]: Finished difference Result 453 states and 643 transitions. [2022-11-25 17:29:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2022-11-25 17:29:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:07,513 INFO L225 Difference]: With dead ends: 453 [2022-11-25 17:29:07,513 INFO L226 Difference]: Without dead ends: 287 [2022-11-25 17:29:07,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:07,516 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 30 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:07,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 718 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-25 17:29:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-25 17:29:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.314410480349345) internal successors, (301), 233 states have internal predecessors, (301), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-25 17:29:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 393 transitions. [2022-11-25 17:29:07,536 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 393 transitions. Word has length 178 [2022-11-25 17:29:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:07,537 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 393 transitions. [2022-11-25 17:29:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:29:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 393 transitions. [2022-11-25 17:29:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 17:29:07,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:07,540 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:07,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:29:07,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 209603569, now seen corresponding path program 1 times [2022-11-25 17:29:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:07,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510298025] [2022-11-25 17:29:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-25 17:29:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-25 17:29:07,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510298025] [2022-11-25 17:29:07,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510298025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:07,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:07,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667770660] [2022-11-25 17:29:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:07,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:07,797 INFO L87 Difference]: Start difference. First operand 287 states and 393 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 17:29:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:07,835 INFO L93 Difference]: Finished difference Result 433 states and 613 transitions. [2022-11-25 17:29:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2022-11-25 17:29:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:07,838 INFO L225 Difference]: With dead ends: 433 [2022-11-25 17:29:07,838 INFO L226 Difference]: Without dead ends: 287 [2022-11-25 17:29:07,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:07,840 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:07,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1036 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-25 17:29:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-25 17:29:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.2882096069868996) internal successors, (295), 233 states have internal predecessors, (295), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-25 17:29:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 387 transitions. [2022-11-25 17:29:07,863 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 387 transitions. Word has length 179 [2022-11-25 17:29:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:07,864 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 387 transitions. [2022-11-25 17:29:07,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-25 17:29:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 387 transitions. [2022-11-25 17:29:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-25 17:29:07,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:07,867 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:29:07,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash -927323165, now seen corresponding path program 1 times [2022-11-25 17:29:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:07,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656478913] [2022-11-25 17:29:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 17:29:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-25 17:29:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:08,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656478913] [2022-11-25 17:29:08,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656478913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628348729] [2022-11-25 17:29:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:08,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:08,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:08,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:08,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:29:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:08,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:29:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-25 17:29:08,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-25 17:29:08,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628348729] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:08,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:29:08,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-11-25 17:29:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390213612] [2022-11-25 17:29:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:08,595 INFO L87 Difference]: Start difference. First operand 287 states and 387 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:29:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:08,648 INFO L93 Difference]: Finished difference Result 454 states and 635 transitions. [2022-11-25 17:29:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:29:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2022-11-25 17:29:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:08,652 INFO L225 Difference]: With dead ends: 454 [2022-11-25 17:29:08,652 INFO L226 Difference]: Without dead ends: 266 [2022-11-25 17:29:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:08,654 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 20 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:08,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 717 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-25 17:29:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2022-11-25 17:29:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 211 states have (on average 1.2796208530805686) internal successors, (270), 215 states have internal predecessors, (270), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 17:29:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 356 transitions. [2022-11-25 17:29:08,673 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 356 transitions. Word has length 186 [2022-11-25 17:29:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:08,674 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 356 transitions. [2022-11-25 17:29:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:29:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 356 transitions. [2022-11-25 17:29:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-25 17:29:08,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:08,678 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:08,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:29:08,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:29:08,888 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 522512342, now seen corresponding path program 1 times [2022-11-25 17:29:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:08,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935827830] [2022-11-25 17:29:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-25 17:29:09,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:09,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935827830] [2022-11-25 17:29:09,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935827830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:09,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:09,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616813163] [2022-11-25 17:29:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:09,127 INFO L87 Difference]: Start difference. First operand 266 states and 356 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-25 17:29:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:09,168 INFO L93 Difference]: Finished difference Result 411 states and 576 transitions. [2022-11-25 17:29:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2022-11-25 17:29:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:09,171 INFO L225 Difference]: With dead ends: 411 [2022-11-25 17:29:09,171 INFO L226 Difference]: Without dead ends: 272 [2022-11-25 17:29:09,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:09,173 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 6 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:09,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 758 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-25 17:29:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2022-11-25 17:29:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 218 states have internal predecessors, (273), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 17:29:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 359 transitions. [2022-11-25 17:29:09,191 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 359 transitions. Word has length 210 [2022-11-25 17:29:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:09,193 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 359 transitions. [2022-11-25 17:29:09,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-25 17:29:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 359 transitions. [2022-11-25 17:29:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-25 17:29:09,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:09,199 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:09,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:29:09,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2072955924, now seen corresponding path program 1 times [2022-11-25 17:29:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:09,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492606498] [2022-11-25 17:29:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-25 17:29:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:09,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492606498] [2022-11-25 17:29:09,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492606498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:09,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762018476] [2022-11-25 17:29:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:09,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:09,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:09,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:09,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:29:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:09,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:29:09,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-25 17:29:09,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:09,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762018476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:09,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:09,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-25 17:29:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544742804] [2022-11-25 17:29:09,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:09,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:09,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:09,713 INFO L87 Difference]: Start difference. First operand 270 states and 359 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-25 17:29:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:09,762 INFO L93 Difference]: Finished difference Result 420 states and 583 transitions. [2022-11-25 17:29:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 217 [2022-11-25 17:29:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:09,765 INFO L225 Difference]: With dead ends: 420 [2022-11-25 17:29:09,765 INFO L226 Difference]: Without dead ends: 277 [2022-11-25 17:29:09,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 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 17:29:09,767 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:09,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 763 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-25 17:29:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2022-11-25 17:29:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 218 states have (on average 1.2706422018348624) internal successors, (277), 222 states have internal predecessors, (277), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 17:29:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 363 transitions. [2022-11-25 17:29:09,786 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 363 transitions. Word has length 217 [2022-11-25 17:29:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:09,787 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 363 transitions. [2022-11-25 17:29:09,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-25 17:29:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 363 transitions. [2022-11-25 17:29:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-25 17:29:09,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:09,791 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:09,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:09,999 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1425681232, now seen corresponding path program 1 times [2022-11-25 17:29:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:10,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943576732] [2022-11-25 17:29:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:10,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-25 17:29:10,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:10,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943576732] [2022-11-25 17:29:10,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943576732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:10,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534611904] [2022-11-25 17:29:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:10,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:10,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:29:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:29:10,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-25 17:29:10,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:10,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534611904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:10,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:10,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-25 17:29:10,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244960576] [2022-11-25 17:29:10,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:10,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:10,576 INFO L87 Difference]: Start difference. First operand 275 states and 363 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-25 17:29:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:10,621 INFO L93 Difference]: Finished difference Result 422 states and 581 transitions. [2022-11-25 17:29:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:29:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 225 [2022-11-25 17:29:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:10,625 INFO L225 Difference]: With dead ends: 422 [2022-11-25 17:29:10,625 INFO L226 Difference]: Without dead ends: 274 [2022-11-25 17:29:10,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 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 17:29:10,626 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:10,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 749 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-25 17:29:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-25 17:29:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 218 states have (on average 1.2568807339449541) internal successors, (274), 221 states have internal predecessors, (274), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 17:29:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 358 transitions. [2022-11-25 17:29:10,644 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 358 transitions. Word has length 225 [2022-11-25 17:29:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:10,645 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 358 transitions. [2022-11-25 17:29:10,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-25 17:29:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 358 transitions. [2022-11-25 17:29:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-25 17:29:10,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:10,649 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:10,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:29:10,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:10,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1356260272, now seen corresponding path program 1 times [2022-11-25 17:29:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:10,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152592155] [2022-11-25 17:29:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-11-25 17:29:11,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152592155] [2022-11-25 17:29:11,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152592155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:11,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:11,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:11,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393699482] [2022-11-25 17:29:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:11,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:11,091 INFO L87 Difference]: Start difference. First operand 274 states and 358 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 17:29:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:11,508 INFO L93 Difference]: Finished difference Result 454 states and 630 transitions. [2022-11-25 17:29:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:29:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 233 [2022-11-25 17:29:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:11,512 INFO L225 Difference]: With dead ends: 454 [2022-11-25 17:29:11,512 INFO L226 Difference]: Without dead ends: 307 [2022-11-25 17:29:11,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:11,514 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 173 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:11,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 519 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:29:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-25 17:29:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 273. [2022-11-25 17:29:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 218 states have (on average 1.2522935779816513) internal successors, (273), 220 states have internal predecessors, (273), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-25 17:29:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 355 transitions. [2022-11-25 17:29:11,544 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 355 transitions. Word has length 233 [2022-11-25 17:29:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:11,545 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 355 transitions. [2022-11-25 17:29:11,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-25 17:29:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 355 transitions. [2022-11-25 17:29:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-25 17:29:11,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:11,549 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:11,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:29:11,550 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2142269095, now seen corresponding path program 1 times [2022-11-25 17:29:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:11,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214306375] [2022-11-25 17:29:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:11,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-11-25 17:29:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:11,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214306375] [2022-11-25 17:29:11,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214306375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:11,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:11,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373287434] [2022-11-25 17:29:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:11,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:11,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:11,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:11,936 INFO L87 Difference]: Start difference. First operand 273 states and 355 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 17:29:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:12,814 INFO L93 Difference]: Finished difference Result 632 states and 851 transitions. [2022-11-25 17:29:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:29:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 234 [2022-11-25 17:29:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:12,819 INFO L225 Difference]: With dead ends: 632 [2022-11-25 17:29:12,819 INFO L226 Difference]: Without dead ends: 486 [2022-11-25 17:29:12,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:29:12,821 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 421 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 645 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:29:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-25 17:29:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 480. [2022-11-25 17:29:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 378 states have (on average 1.306878306878307) internal successors, (494), 380 states have internal predecessors, (494), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-25 17:29:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 634 transitions. [2022-11-25 17:29:12,872 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 634 transitions. Word has length 234 [2022-11-25 17:29:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:12,872 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 634 transitions. [2022-11-25 17:29:12,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 17:29:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 634 transitions. [2022-11-25 17:29:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-25 17:29:12,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:12,877 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:29:12,878 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1811435868, now seen corresponding path program 1 times [2022-11-25 17:29:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:12,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770218201] [2022-11-25 17:29:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-25 17:29:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-25 17:29:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 17:29:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:29:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-25 17:29:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:13,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770218201] [2022-11-25 17:29:13,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770218201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:13,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:13,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347100222] [2022-11-25 17:29:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:13,121 INFO L87 Difference]: Start difference. First operand 480 states and 634 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 17:29:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:13,809 INFO L93 Difference]: Finished difference Result 1049 states and 1436 transitions. [2022-11-25 17:29:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 267 [2022-11-25 17:29:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:13,814 INFO L225 Difference]: With dead ends: 1049 [2022-11-25 17:29:13,815 INFO L226 Difference]: Without dead ends: 768 [2022-11-25 17:29:13,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:13,817 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 221 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:13,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 488 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:29:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-25 17:29:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 599. [2022-11-25 17:29:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.3135593220338984) internal successors, (620), 478 states have internal predecessors, (620), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-25 17:29:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 790 transitions. [2022-11-25 17:29:13,900 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 790 transitions. Word has length 267 [2022-11-25 17:29:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:13,901 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 790 transitions. [2022-11-25 17:29:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 17:29:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 790 transitions. [2022-11-25 17:29:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-25 17:29:13,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:13,907 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:13,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:29:13,907 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:13,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:13,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1916258247, now seen corresponding path program 1 times [2022-11-25 17:29:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:13,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138280848] [2022-11-25 17:29:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-25 17:29:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-11-25 17:29:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-25 17:29:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-25 17:29:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-25 17:29:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138280848] [2022-11-25 17:29:14,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138280848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:14,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:14,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:14,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7734038] [2022-11-25 17:29:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:14,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:14,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:14,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:14,187 INFO L87 Difference]: Start difference. First operand 599 states and 790 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 17:29:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:14,874 INFO L93 Difference]: Finished difference Result 1323 states and 1794 transitions. [2022-11-25 17:29:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 268 [2022-11-25 17:29:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:14,880 INFO L225 Difference]: With dead ends: 1323 [2022-11-25 17:29:14,880 INFO L226 Difference]: Without dead ends: 956 [2022-11-25 17:29:14,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:14,882 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 222 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:14,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 513 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:29:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-25 17:29:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 948. [2022-11-25 17:29:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 741 states have (on average 1.3400809716599191) internal successors, (993), 755 states have internal predecessors, (993), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2022-11-25 17:29:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1271 transitions. [2022-11-25 17:29:14,983 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1271 transitions. Word has length 268 [2022-11-25 17:29:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:14,983 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1271 transitions. [2022-11-25 17:29:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 17:29:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1271 transitions. [2022-11-25 17:29:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-25 17:29:14,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:14,988 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:14,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 17:29:14,989 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash -349092137, now seen corresponding path program 1 times [2022-11-25 17:29:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:14,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091729615] [2022-11-25 17:29:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 17:29:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-25 17:29:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-25 17:29:15,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:15,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091729615] [2022-11-25 17:29:15,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091729615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:15,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:15,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:29:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058487422] [2022-11-25 17:29:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:15,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:29:15,241 INFO L87 Difference]: Start difference. First operand 948 states and 1271 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:15,999 INFO L93 Difference]: Finished difference Result 2208 states and 3033 transitions. [2022-11-25 17:29:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2022-11-25 17:29:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:16,013 INFO L225 Difference]: With dead ends: 2208 [2022-11-25 17:29:16,013 INFO L226 Difference]: Without dead ends: 1532 [2022-11-25 17:29:16,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:16,017 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 222 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:16,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 537 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:29:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-11-25 17:29:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1518. [2022-11-25 17:29:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1179 states have (on average 1.364715860899067) internal successors, (1609), 1207 states have internal predecessors, (1609), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-25 17:29:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2071 transitions. [2022-11-25 17:29:16,257 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2071 transitions. Word has length 269 [2022-11-25 17:29:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:16,257 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2071 transitions. [2022-11-25 17:29:16,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2071 transitions. [2022-11-25 17:29:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-25 17:29:16,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:16,263 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:16,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 17:29:16,264 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash -743458923, now seen corresponding path program 1 times [2022-11-25 17:29:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:16,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935947734] [2022-11-25 17:29:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 17:29:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-25 17:29:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-11-25 17:29:16,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:16,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935947734] [2022-11-25 17:29:16,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935947734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:16,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870794353] [2022-11-25 17:29:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:16,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:16,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:29:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:16,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:29:16,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-11-25 17:29:16,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:16,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870794353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:16,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:16,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-25 17:29:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095464088] [2022-11-25 17:29:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:16,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:29:16,864 INFO L87 Difference]: Start difference. First operand 1518 states and 2071 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:17,116 INFO L93 Difference]: Finished difference Result 2804 states and 3882 transitions. [2022-11-25 17:29:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:17,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2022-11-25 17:29:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:17,126 INFO L225 Difference]: With dead ends: 2804 [2022-11-25 17:29:17,126 INFO L226 Difference]: Without dead ends: 1518 [2022-11-25 17:29:17,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:29:17,131 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 51 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:17,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 666 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:29:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-11-25 17:29:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2022-11-25 17:29:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1179 states have (on average 1.344359626802375) internal successors, (1585), 1207 states have internal predecessors, (1585), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-25 17:29:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2047 transitions. [2022-11-25 17:29:17,299 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2047 transitions. Word has length 269 [2022-11-25 17:29:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:17,300 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2047 transitions. [2022-11-25 17:29:17,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2047 transitions. [2022-11-25 17:29:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-25 17:29:17,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:17,305 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:17,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 17:29:17,512 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 407381820, now seen corresponding path program 1 times [2022-11-25 17:29:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388761408] [2022-11-25 17:29:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-11-25 17:29:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-25 17:29:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388761408] [2022-11-25 17:29:17,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388761408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678987563] [2022-11-25 17:29:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:17,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:17,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:17,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:29:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:18,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:29:18,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-11-25 17:29:18,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678987563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:18,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:18,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-25 17:29:18,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065000457] [2022-11-25 17:29:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:29:18,195 INFO L87 Difference]: Start difference. First operand 1518 states and 2047 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:18,443 INFO L93 Difference]: Finished difference Result 2804 states and 3826 transitions. [2022-11-25 17:29:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 270 [2022-11-25 17:29:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:18,452 INFO L225 Difference]: With dead ends: 2804 [2022-11-25 17:29:18,453 INFO L226 Difference]: Without dead ends: 1566 [2022-11-25 17:29:18,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:29:18,457 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 15 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:18,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 689 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:29:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2022-11-25 17:29:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1566. [2022-11-25 17:29:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1219 states have (on average 1.3461853978671041) internal successors, (1641), 1247 states have internal predecessors, (1641), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-25 17:29:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2103 transitions. [2022-11-25 17:29:18,667 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2103 transitions. Word has length 270 [2022-11-25 17:29:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:18,668 INFO L495 AbstractCegarLoop]: Abstraction has 1566 states and 2103 transitions. [2022-11-25 17:29:18,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 17:29:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2103 transitions. [2022-11-25 17:29:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-25 17:29:18,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:18,674 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:18,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 17:29:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 17:29:18,894 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1806296465, now seen corresponding path program 1 times [2022-11-25 17:29:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:18,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611244246] [2022-11-25 17:29:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 17:29:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-25 17:29:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611244246] [2022-11-25 17:29:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611244246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:19,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082900969] [2022-11-25 17:29:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:19,469 INFO L87 Difference]: Start difference. First operand 1566 states and 2103 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 17:29:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:20,521 INFO L93 Difference]: Finished difference Result 2388 states and 3434 transitions. [2022-11-25 17:29:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:29:20,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 271 [2022-11-25 17:29:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:20,543 INFO L225 Difference]: With dead ends: 2388 [2022-11-25 17:29:20,543 INFO L226 Difference]: Without dead ends: 2386 [2022-11-25 17:29:20,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:29:20,546 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 230 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:20,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1486 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:29:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-25 17:29:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1614. [2022-11-25 17:29:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1251 states have (on average 1.337330135891287) internal successors, (1673), 1287 states have internal predecessors, (1673), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2022-11-25 17:29:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2151 transitions. [2022-11-25 17:29:20,809 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2151 transitions. Word has length 271 [2022-11-25 17:29:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:20,809 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2151 transitions. [2022-11-25 17:29:20,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 17:29:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2151 transitions. [2022-11-25 17:29:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-25 17:29:20,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:20,814 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 17:29:20,814 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1178133577, now seen corresponding path program 1 times [2022-11-25 17:29:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:20,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273947315] [2022-11-25 17:29:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 17:29:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 17:29:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-25 17:29:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273947315] [2022-11-25 17:29:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273947315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702563640] [2022-11-25 17:29:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:21,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:21,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:21,326 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:21,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:29:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:21,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:29:21,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-25 17:29:21,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-25 17:29:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702563640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:29:22,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:29:22,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-11-25 17:29:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62466661] [2022-11-25 17:29:22,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:22,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 17:29:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 17:29:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:29:22,500 INFO L87 Difference]: Start difference. First operand 1614 states and 2151 transitions. Second operand has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-25 17:29:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:25,606 INFO L93 Difference]: Finished difference Result 4692 states and 6766 transitions. [2022-11-25 17:29:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 17:29:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 279 [2022-11-25 17:29:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:25,624 INFO L225 Difference]: With dead ends: 4692 [2022-11-25 17:29:25,624 INFO L226 Difference]: Without dead ends: 3358 [2022-11-25 17:29:25,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 603 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:29:25,630 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 546 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:25,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 2462 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 17:29:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-11-25 17:29:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2408. [2022-11-25 17:29:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 1862 states have (on average 1.3286788399570355) internal successors, (2474), 1914 states have internal predecessors, (2474), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2022-11-25 17:29:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3194 transitions. [2022-11-25 17:29:25,940 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3194 transitions. Word has length 279 [2022-11-25 17:29:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:25,941 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3194 transitions. [2022-11-25 17:29:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-25 17:29:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3194 transitions. [2022-11-25 17:29:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-25 17:29:25,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:25,947 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:25,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 17:29:26,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:26,157 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:26,157 INFO L85 PathProgramCache]: Analyzing trace with hash -216519560, now seen corresponding path program 1 times [2022-11-25 17:29:26,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:26,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579993551] [2022-11-25 17:29:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 17:29:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 17:29:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-25 17:29:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:26,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579993551] [2022-11-25 17:29:26,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579993551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:26,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546123277] [2022-11-25 17:29:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:26,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:26,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:29:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:26,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:29:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-11-25 17:29:26,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:26,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546123277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:26,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:26,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-25 17:29:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574592497] [2022-11-25 17:29:26,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:26,667 INFO L87 Difference]: Start difference. First operand 2408 states and 3194 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:26,931 INFO L93 Difference]: Finished difference Result 4649 states and 6264 transitions. [2022-11-25 17:29:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:26,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 279 [2022-11-25 17:29:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:26,944 INFO L225 Difference]: With dead ends: 4649 [2022-11-25 17:29:26,944 INFO L226 Difference]: Without dead ends: 2344 [2022-11-25 17:29:26,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:29:26,951 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 11 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:26,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 689 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:29:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-11-25 17:29:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2344. [2022-11-25 17:29:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 1818 states have (on average 1.3113311331133113) internal successors, (2384), 1870 states have internal predecessors, (2384), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2022-11-25 17:29:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3068 transitions. [2022-11-25 17:29:27,271 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3068 transitions. Word has length 279 [2022-11-25 17:29:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3068 transitions. [2022-11-25 17:29:27,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-25 17:29:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3068 transitions. [2022-11-25 17:29:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-25 17:29:27,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:27,277 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:27,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:27,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:27,490 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -487785417, now seen corresponding path program 1 times [2022-11-25 17:29:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:27,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757082841] [2022-11-25 17:29:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 17:29:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:29:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-25 17:29:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-11-25 17:29:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-25 17:29:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-25 17:29:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-25 17:29:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-25 17:29:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-25 17:29:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-25 17:29:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-11-25 17:29:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-11-25 17:29:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757082841] [2022-11-25 17:29:27,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757082841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723790551] [2022-11-25 17:29:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:27,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:27,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:27,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:29:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:27,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:29:27,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-11-25 17:29:27,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:27,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723790551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:27,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:27,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-25 17:29:27,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532080324] [2022-11-25 17:29:27,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:27,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:29:27,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:29:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:27,972 INFO L87 Difference]: Start difference. First operand 2344 states and 3068 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 17:29:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:28,327 INFO L93 Difference]: Finished difference Result 4431 states and 5905 transitions. [2022-11-25 17:29:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:29:28,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 282 [2022-11-25 17:29:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:28,344 INFO L225 Difference]: With dead ends: 4431 [2022-11-25 17:29:28,344 INFO L226 Difference]: Without dead ends: 2172 [2022-11-25 17:29:28,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 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 17:29:28,351 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 8 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:28,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 692 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:29:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-25 17:29:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2172. [2022-11-25 17:29:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1676 states have (on average 1.3048926014319808) internal successors, (2187), 1728 states have internal predecessors, (2187), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2022-11-25 17:29:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2833 transitions. [2022-11-25 17:29:28,669 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2833 transitions. Word has length 282 [2022-11-25 17:29:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:28,670 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 2833 transitions. [2022-11-25 17:29:28,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 17:29:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2833 transitions. [2022-11-25 17:29:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-25 17:29:28,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:28,674 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:28,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:28,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:28,888 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1403066076, now seen corresponding path program 1 times [2022-11-25 17:29:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:28,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318233368] [2022-11-25 17:29:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 17:29:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 17:29:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-25 17:29:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-11-25 17:29:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-11-25 17:29:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:29,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318233368] [2022-11-25 17:29:29,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318233368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233838490] [2022-11-25 17:29:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:29,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:29,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:29,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:29,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:29:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:30,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:29:30,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-25 17:29:30,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:30,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233838490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:30,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:30,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2022-11-25 17:29:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514704817] [2022-11-25 17:29:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:30,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:29:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:29:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:29:30,349 INFO L87 Difference]: Start difference. First operand 2172 states and 2833 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 17:29:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:32,203 INFO L93 Difference]: Finished difference Result 8006 states and 10819 transitions. [2022-11-25 17:29:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:29:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 294 [2022-11-25 17:29:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:32,261 INFO L225 Difference]: With dead ends: 8006 [2022-11-25 17:29:32,261 INFO L226 Difference]: Without dead ends: 6408 [2022-11-25 17:29:32,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:29:32,269 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1007 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:32,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 3206 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 17:29:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6408 states. [2022-11-25 17:29:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6408 to 5188. [2022-11-25 17:29:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 3969 states have (on average 1.2950365331317713) internal successors, (5140), 4097 states have internal predecessors, (5140), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2022-11-25 17:29:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6714 transitions. [2022-11-25 17:29:32,950 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6714 transitions. Word has length 294 [2022-11-25 17:29:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:32,951 INFO L495 AbstractCegarLoop]: Abstraction has 5188 states and 6714 transitions. [2022-11-25 17:29:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 17:29:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6714 transitions. [2022-11-25 17:29:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-25 17:29:32,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:32,957 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:32,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:33,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:33,170 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1391814303, now seen corresponding path program 1 times [2022-11-25 17:29:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:33,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305549436] [2022-11-25 17:29:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-25 17:29:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-11-25 17:29:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-25 17:29:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 17:29:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-25 17:29:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:33,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305549436] [2022-11-25 17:29:33,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305549436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:33,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:33,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:29:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355569328] [2022-11-25 17:29:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:33,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:29:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:29:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:33,534 INFO L87 Difference]: Start difference. First operand 5188 states and 6714 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 17:29:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:35,312 INFO L93 Difference]: Finished difference Result 16238 states and 23255 transitions. [2022-11-25 17:29:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:29:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2022-11-25 17:29:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:35,367 INFO L225 Difference]: With dead ends: 16238 [2022-11-25 17:29:35,367 INFO L226 Difference]: Without dead ends: 11564 [2022-11-25 17:29:35,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:29:35,380 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 438 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:35,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1774 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:29:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11564 states. [2022-11-25 17:29:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11564 to 5620. [2022-11-25 17:29:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 4317 states have (on average 1.3055362520268705) internal successors, (5636), 4445 states have internal predecessors, (5636), 871 states have call successors, (871), 431 states have call predecessors, (871), 431 states have return successors, (871), 751 states have call predecessors, (871), 871 states have call successors, (871) [2022-11-25 17:29:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 7378 transitions. [2022-11-25 17:29:36,306 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 7378 transitions. Word has length 300 [2022-11-25 17:29:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:36,311 INFO L495 AbstractCegarLoop]: Abstraction has 5620 states and 7378 transitions. [2022-11-25 17:29:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 17:29:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 7378 transitions. [2022-11-25 17:29:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-25 17:29:36,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:36,320 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:36,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 17:29:36,320 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1072738013, now seen corresponding path program 1 times [2022-11-25 17:29:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:36,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804394917] [2022-11-25 17:29:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:29:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-25 17:29:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-25 17:29:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-25 17:29:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-11-25 17:29:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-25 17:29:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 17:29:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-25 17:29:36,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:36,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804394917] [2022-11-25 17:29:36,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804394917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:36,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:36,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:29:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906563233] [2022-11-25 17:29:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:29:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:29:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:29:36,767 INFO L87 Difference]: Start difference. First operand 5620 states and 7378 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-25 17:29:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:37,936 INFO L93 Difference]: Finished difference Result 10571 states and 13925 transitions. [2022-11-25 17:29:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:29:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 300 [2022-11-25 17:29:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:37,957 INFO L225 Difference]: With dead ends: 10571 [2022-11-25 17:29:37,958 INFO L226 Difference]: Without dead ends: 5529 [2022-11-25 17:29:37,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:29:37,970 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 63 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:37,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 771 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:29:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-11-25 17:29:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5529. [2022-11-25 17:29:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4241 states have (on average 1.303701957085593) internal successors, (5529), 4361 states have internal predecessors, (5529), 864 states have call successors, (864), 424 states have call predecessors, (864), 423 states have return successors, (863), 750 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-25 17:29:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7256 transitions. [2022-11-25 17:29:38,751 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7256 transitions. Word has length 300 [2022-11-25 17:29:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:38,752 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 7256 transitions. [2022-11-25 17:29:38,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-25 17:29:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7256 transitions. [2022-11-25 17:29:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-25 17:29:38,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:38,756 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:38,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 17:29:38,757 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -732264696, now seen corresponding path program 1 times [2022-11-25 17:29:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:38,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292140847] [2022-11-25 17:29:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-25 17:29:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:29:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-25 17:29:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:29:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 17:29:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 17:29:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-25 17:29:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 17:29:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-25 17:29:39,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292140847] [2022-11-25 17:29:39,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292140847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66988029] [2022-11-25 17:29:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:39,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:39,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:39,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:39,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:29:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:39,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:29:39,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-25 17:29:39,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:29:39,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66988029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:39,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:29:39,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-25 17:29:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126219352] [2022-11-25 17:29:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:29:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:29:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:29:39,875 INFO L87 Difference]: Start difference. First operand 5529 states and 7256 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 17:29:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:41,618 INFO L93 Difference]: Finished difference Result 15149 states and 20758 transitions. [2022-11-25 17:29:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:29:41,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 305 [2022-11-25 17:29:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:41,660 INFO L225 Difference]: With dead ends: 15149 [2022-11-25 17:29:41,661 INFO L226 Difference]: Without dead ends: 10147 [2022-11-25 17:29:41,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:29:41,674 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 392 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:41,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2187 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:29:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10147 states. [2022-11-25 17:29:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 6705. [2022-11-25 17:29:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 5137 states have (on average 1.2990072026474595) internal successors, (6673), 5287 states have internal predecessors, (6673), 1050 states have call successors, (1050), 518 states have call predecessors, (1050), 517 states have return successors, (1049), 906 states have call predecessors, (1049), 1049 states have call successors, (1049) [2022-11-25 17:29:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 8772 transitions. [2022-11-25 17:29:42,651 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 8772 transitions. Word has length 305 [2022-11-25 17:29:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:42,651 INFO L495 AbstractCegarLoop]: Abstraction has 6705 states and 8772 transitions. [2022-11-25 17:29:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 17:29:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 8772 transitions. [2022-11-25 17:29:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-25 17:29:42,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:42,657 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:42,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:42,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-25 17:29:42,868 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -56931576, now seen corresponding path program 1 times [2022-11-25 17:29:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134441263] [2022-11-25 17:29:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-25 17:29:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:29:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-25 17:29:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:29:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 17:29:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 17:29:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-25 17:29:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-25 17:29:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-25 17:29:43,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134441263] [2022-11-25 17:29:43,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134441263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:43,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876501630] [2022-11-25 17:29:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:43,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:43,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:43,437 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:43,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:29:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:43,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:29:43,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-11-25 17:29:43,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-25 17:29:44,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876501630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:29:44,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:29:44,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 18 [2022-11-25 17:29:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082112480] [2022-11-25 17:29:44,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:44,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:29:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:29:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:29:44,169 INFO L87 Difference]: Start difference. First operand 6705 states and 8772 transitions. Second operand has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-11-25 17:29:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:51,267 INFO L93 Difference]: Finished difference Result 16853 states and 23030 transitions. [2022-11-25 17:29:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-25 17:29:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) Word has length 305 [2022-11-25 17:29:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:51,314 INFO L225 Difference]: With dead ends: 16853 [2022-11-25 17:29:51,315 INFO L226 Difference]: Without dead ends: 10627 [2022-11-25 17:29:51,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540 [2022-11-25 17:29:51,332 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1515 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 5808 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 6478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 5808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:51,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4770 Invalid, 6478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [670 Valid, 5808 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 17:29:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10627 states. [2022-11-25 17:29:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10627 to 5975. [2022-11-25 17:29:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5975 states, 4580 states have (on average 1.2945414847161572) internal successors, (5929), 4711 states have internal predecessors, (5929), 927 states have call successors, (927), 468 states have call predecessors, (927), 467 states have return successors, (926), 802 states have call predecessors, (926), 926 states have call successors, (926) [2022-11-25 17:29:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7782 transitions. [2022-11-25 17:29:52,227 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7782 transitions. Word has length 305 [2022-11-25 17:29:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:52,228 INFO L495 AbstractCegarLoop]: Abstraction has 5975 states and 7782 transitions. [2022-11-25 17:29:52,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-11-25 17:29:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7782 transitions. [2022-11-25 17:29:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-25 17:29:52,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:52,232 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:52,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:29:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-25 17:29:52,439 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash 996206097, now seen corresponding path program 1 times [2022-11-25 17:29:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281608070] [2022-11-25 17:29:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:52,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-25 17:29:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:29:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-25 17:29:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:29:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-25 17:29:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-25 17:29:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 17:29:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 17:29:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-25 17:29:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2022-11-25 17:29:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:52,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281608070] [2022-11-25 17:29:52,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281608070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:29:52,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:29:52,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:29:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780332162] [2022-11-25 17:29:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:29:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:29:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:29:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:29:52,667 INFO L87 Difference]: Start difference. First operand 5975 states and 7782 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 17:29:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:29:54,211 INFO L93 Difference]: Finished difference Result 9803 states and 12849 transitions. [2022-11-25 17:29:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:29:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 311 [2022-11-25 17:29:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:29:54,233 INFO L225 Difference]: With dead ends: 9803 [2022-11-25 17:29:54,233 INFO L226 Difference]: Without dead ends: 4608 [2022-11-25 17:29:54,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:29:54,247 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 356 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:29:54,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1003 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 17:29:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2022-11-25 17:29:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 4582. [2022-11-25 17:29:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 3519 states have (on average 1.2776356919579426) internal successors, (4496), 3616 states have internal predecessors, (4496), 716 states have call successors, (716), 346 states have call predecessors, (716), 346 states have return successors, (716), 619 states have call predecessors, (716), 716 states have call successors, (716) [2022-11-25 17:29:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 5928 transitions. [2022-11-25 17:29:54,806 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 5928 transitions. Word has length 311 [2022-11-25 17:29:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:29:54,807 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 5928 transitions. [2022-11-25 17:29:54,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 17:29:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 5928 transitions. [2022-11-25 17:29:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-25 17:29:54,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:29:54,819 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:29:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-25 17:29:54,820 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:29:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:29:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 197121380, now seen corresponding path program 1 times [2022-11-25 17:29:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:29:54,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270419179] [2022-11-25 17:29:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:29:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:29:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:29:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:29:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:29:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:29:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:29:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:29:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:29:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:29:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:29:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:29:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:29:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:29:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:29:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:29:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:29:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:29:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:29:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-25 17:29:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:29:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:29:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-25 17:29:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:29:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-25 17:29:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-25 17:29:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 17:29:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 17:29:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 17:29:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-25 17:29:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-11-25 17:29:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-11-25 17:29:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-11-25 17:29:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-11-25 17:29:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-11-25 17:29:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-25 17:29:55,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:29:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270419179] [2022-11-25 17:29:55,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270419179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606831471] [2022-11-25 17:29:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:29:55,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:29:55,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:29:55,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:29:55,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:29:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:29:56,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 17:29:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 240 proven. 92 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2022-11-25 17:29:56,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-25 17:29:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606831471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:29:57,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:29:57,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2022-11-25 17:29:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886047451] [2022-11-25 17:29:57,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:57,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 17:29:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:29:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 17:29:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-11-25 17:29:57,383 INFO L87 Difference]: Start difference. First operand 4582 states and 5928 transitions. Second operand has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-25 17:30:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:30,483 INFO L93 Difference]: Finished difference Result 33443 states and 45951 transitions. [2022-11-25 17:30:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-11-25 17:30:30,483 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) Word has length 361 [2022-11-25 17:30:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:30,597 INFO L225 Difference]: With dead ends: 33443 [2022-11-25 17:30:30,597 INFO L226 Difference]: Without dead ends: 29276 [2022-11-25 17:30:30,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 804 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24646 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=6010, Invalid=57242, Unknown=0, NotChecked=0, Total=63252 [2022-11-25 17:30:30,629 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 5795 mSDsluCounter, 8088 mSDsCounter, 0 mSdLazyCounter, 12537 mSolverCounterSat, 5093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5795 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 17630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5093 IncrementalHoareTripleChecker+Valid, 12537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:30,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5795 Valid, 8784 Invalid, 17630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5093 Valid, 12537 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-25 17:30:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29276 states. [2022-11-25 17:30:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29276 to 9758. [2022-11-25 17:30:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9758 states, 7439 states have (on average 1.267509073800242) internal successors, (9429), 7607 states have internal predecessors, (9429), 1593 states have call successors, (1593), 689 states have call predecessors, (1593), 725 states have return successors, (1665), 1461 states have call predecessors, (1665), 1593 states have call successors, (1665) [2022-11-25 17:30:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9758 states to 9758 states and 12687 transitions. [2022-11-25 17:30:32,645 INFO L78 Accepts]: Start accepts. Automaton has 9758 states and 12687 transitions. Word has length 361 [2022-11-25 17:30:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:32,646 INFO L495 AbstractCegarLoop]: Abstraction has 9758 states and 12687 transitions. [2022-11-25 17:30:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-25 17:30:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9758 states and 12687 transitions. [2022-11-25 17:30:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-25 17:30:32,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:32,673 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:32,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-25 17:30:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-25 17:30:32,880 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:30:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 118835525, now seen corresponding path program 1 times [2022-11-25 17:30:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:32,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345172979] [2022-11-25 17:30:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:30:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:30:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:30:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:30:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:30:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:30:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:30:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:30:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:30:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:30:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:30:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:30:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:30:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:30:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:30:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:30:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:30:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:30:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:30:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-25 17:30:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:30:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-25 17:30:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-25 17:30:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-25 17:30:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-25 17:30:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-25 17:30:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 17:30:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-25 17:30:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-25 17:30:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-25 17:30:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-11-25 17:30:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-11-25 17:30:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-11-25 17:30:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-11-25 17:30:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-11-25 17:30:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-25 17:30:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:30:33,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345172979] [2022-11-25 17:30:33,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345172979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:30:33,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383478083] [2022-11-25 17:30:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:33,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:30:33,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:33,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:30:33,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:30:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:30:33,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-11-25 17:30:33,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:30:33,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383478083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:30:33,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:30:33,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-25 17:30:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528526152] [2022-11-25 17:30:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:30:33,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:30:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:30:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:30:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:30:33,553 INFO L87 Difference]: Start difference. First operand 9758 states and 12687 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-25 17:30:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:36,913 INFO L93 Difference]: Finished difference Result 22242 states and 29455 transitions. [2022-11-25 17:30:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:30:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 361 [2022-11-25 17:30:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:36,969 INFO L225 Difference]: With dead ends: 22242 [2022-11-25 17:30:36,969 INFO L226 Difference]: Without dead ends: 13408 [2022-11-25 17:30:36,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:30:36,986 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 429 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:36,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 2404 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:30:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2022-11-25 17:30:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 8016. [2022-11-25 17:30:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 6127 states have (on average 1.2438387465317446) internal successors, (7621), 6305 states have internal predecessors, (7621), 1235 states have call successors, (1235), 617 states have call predecessors, (1235), 653 states have return successors, (1283), 1093 states have call predecessors, (1283), 1235 states have call successors, (1283) [2022-11-25 17:30:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 10139 transitions. [2022-11-25 17:30:38,567 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 10139 transitions. Word has length 361 [2022-11-25 17:30:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:38,568 INFO L495 AbstractCegarLoop]: Abstraction has 8016 states and 10139 transitions. [2022-11-25 17:30:38,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-25 17:30:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 10139 transitions. [2022-11-25 17:30:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-25 17:30:38,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:38,585 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:30:38,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:30:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:30:38,792 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:30:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash 494839499, now seen corresponding path program 1 times [2022-11-25 17:30:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:30:38,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780681946] [2022-11-25 17:30:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:30:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:30:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:30:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:30:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:30:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:30:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:30:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:30:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:30:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:30:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:30:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:30:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:30:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:30:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:30:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:30:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:30:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:30:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:30:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:30:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:30:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:30:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 17:30:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 17:30:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-25 17:30:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 17:30:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-25 17:30:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 17:30:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-11-25 17:30:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-25 17:30:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-25 17:30:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-11-25 17:30:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-11-25 17:30:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-11-25 17:30:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-25 17:30:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-11-25 17:30:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-11-25 17:30:40,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:30:40,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780681946] [2022-11-25 17:30:40,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780681946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:30:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516547621] [2022-11-25 17:30:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:40,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:30:40,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:30:40,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:30:40,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 17:30:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:40,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 17:30:40,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 206 proven. 119 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-11-25 17:30:40,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:30:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-25 17:30:41,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516547621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:30:41,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:30:41,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2022-11-25 17:30:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712358761] [2022-11-25 17:30:41,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:30:41,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 17:30:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:30:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 17:30:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:30:41,747 INFO L87 Difference]: Start difference. First operand 8016 states and 10139 transitions. Second operand has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-25 17:31:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:16,626 INFO L93 Difference]: Finished difference Result 22978 states and 29441 transitions. [2022-11-25 17:31:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2022-11-25 17:31:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) Word has length 362 [2022-11-25 17:31:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:16,682 INFO L225 Difference]: With dead ends: 22978 [2022-11-25 17:31:16,682 INFO L226 Difference]: Without dead ends: 15794 [2022-11-25 17:31:16,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 799 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29505 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=5897, Invalid=71665, Unknown=0, NotChecked=0, Total=77562 [2022-11-25 17:31:16,706 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 4064 mSDsluCounter, 19465 mSDsCounter, 0 mSdLazyCounter, 25728 mSolverCounterSat, 3302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 20412 SdHoareTripleChecker+Invalid, 29030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3302 IncrementalHoareTripleChecker+Valid, 25728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:16,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 20412 Invalid, 29030 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3302 Valid, 25728 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2022-11-25 17:31:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15794 states. [2022-11-25 17:31:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15794 to 8846. [2022-11-25 17:31:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 6772 states have (on average 1.2427643236857648) internal successors, (8416), 6957 states have internal predecessors, (8416), 1332 states have call successors, (1332), 693 states have call predecessors, (1332), 741 states have return successors, (1404), 1195 states have call predecessors, (1404), 1332 states have call successors, (1404) [2022-11-25 17:31:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 11152 transitions. [2022-11-25 17:31:18,860 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 11152 transitions. Word has length 362 [2022-11-25 17:31:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:18,861 INFO L495 AbstractCegarLoop]: Abstraction has 8846 states and 11152 transitions. [2022-11-25 17:31:18,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-25 17:31:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 11152 transitions. [2022-11-25 17:31:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-25 17:31:18,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:18,882 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:18,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:31:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-25 17:31:19,090 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:31:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash 586029794, now seen corresponding path program 1 times [2022-11-25 17:31:19,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90789781] [2022-11-25 17:31:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:31:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:31:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:31:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:31:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:31:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:31:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:31:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:31:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:31:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:31:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:31:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:31:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:31:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:31:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:31:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:31:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:31:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:31:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:31:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:31:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-25 17:31:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-25 17:31:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-25 17:31:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-25 17:31:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 17:31:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 17:31:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-25 17:31:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-25 17:31:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-11-25 17:31:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-25 17:31:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-25 17:31:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-25 17:31:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-25 17:31:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-25 17:31:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-25 17:31:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-25 17:31:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:19,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90789781] [2022-11-25 17:31:19,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90789781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:31:19,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:31:19,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:31:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615373444] [2022-11-25 17:31:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:31:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:31:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:19,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:31:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:31:19,337 INFO L87 Difference]: Start difference. First operand 8846 states and 11152 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 17:31:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:31:21,570 INFO L93 Difference]: Finished difference Result 17937 states and 22583 transitions. [2022-11-25 17:31:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:31:21,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 363 [2022-11-25 17:31:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:31:21,598 INFO L225 Difference]: With dead ends: 17937 [2022-11-25 17:31:21,598 INFO L226 Difference]: Without dead ends: 8702 [2022-11-25 17:31:21,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:31:21,610 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:31:21,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 594 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:31:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2022-11-25 17:31:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 8702. [2022-11-25 17:31:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8702 states, 6676 states have (on average 1.212552426602756) internal successors, (8095), 6837 states have internal predecessors, (8095), 1332 states have call successors, (1332), 693 states have call predecessors, (1332), 693 states have return successors, (1332), 1171 states have call predecessors, (1332), 1332 states have call successors, (1332) [2022-11-25 17:31:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 10759 transitions. [2022-11-25 17:31:23,693 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 10759 transitions. Word has length 363 [2022-11-25 17:31:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:31:23,694 INFO L495 AbstractCegarLoop]: Abstraction has 8702 states and 10759 transitions. [2022-11-25 17:31:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 17:31:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 10759 transitions. [2022-11-25 17:31:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-25 17:31:23,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:31:23,707 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:31:23,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-25 17:31:23,707 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:31:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:31:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2058777752, now seen corresponding path program 1 times [2022-11-25 17:31:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:31:23,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881387963] [2022-11-25 17:31:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:23,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:31:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:31:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:31:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:31:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:31:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:31:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:31:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:31:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:31:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:31:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:31:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:31:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:31:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:31:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:31:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:31:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:31:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:31:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:31:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:31:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:31:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-25 17:31:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-25 17:31:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-25 17:31:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-25 17:31:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-25 17:31:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-25 17:31:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-25 17:31:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-25 17:31:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-11-25 17:31:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-25 17:31:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-25 17:31:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-25 17:31:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-25 17:31:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-25 17:31:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-25 17:31:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-11-25 17:31:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 17:31:24,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:31:24,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881387963] [2022-11-25 17:31:24,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881387963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:31:24,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488937660] [2022-11-25 17:31:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:31:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:31:24,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:31:24,996 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:31:25,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 17:31:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:31:25,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 17:31:25,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:31:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 274 proven. 102 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2022-11-25 17:31:25,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:31:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 56 proven. 53 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-25 17:31:26,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488937660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:31:26,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:31:26,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 34 [2022-11-25 17:31:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162561289] [2022-11-25 17:31:26,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:31:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-25 17:31:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:31:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-25 17:31:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 17:31:26,583 INFO L87 Difference]: Start difference. First operand 8702 states and 10759 transitions. Second operand has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) [2022-11-25 17:34:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:34:39,955 INFO L93 Difference]: Finished difference Result 137886 states and 183262 transitions. [2022-11-25 17:34:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1027 states. [2022-11-25 17:34:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) Word has length 373 [2022-11-25 17:34:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:34:40,569 INFO L225 Difference]: With dead ends: 137886 [2022-11-25 17:34:40,569 INFO L226 Difference]: Without dead ends: 130798 [2022-11-25 17:34:40,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 951 SyntacticMatches, 1 SemanticMatches, 1056 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523420 ImplicationChecksByTransitivity, 83.0s TimeCoverageRelationStatistics Valid=43368, Invalid=1074938, Unknown=0, NotChecked=0, Total=1118306 [2022-11-25 17:34:40,737 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 6674 mSDsluCounter, 43943 mSDsCounter, 0 mSdLazyCounter, 66043 mSolverCounterSat, 16903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 46491 SdHoareTripleChecker+Invalid, 82946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 16903 IncrementalHoareTripleChecker+Valid, 66043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:34:40,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6675 Valid, 46491 Invalid, 82946 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [16903 Valid, 66043 Invalid, 0 Unknown, 0 Unchecked, 54.5s Time] [2022-11-25 17:34:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130798 states. [2022-11-25 17:34:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130798 to 25850. [2022-11-25 17:34:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25850 states, 19656 states have (on average 1.2178469678469679) internal successors, (23938), 20110 states have internal predecessors, (23938), 4231 states have call successors, (4231), 1962 states have call predecessors, (4231), 1962 states have return successors, (4231), 3777 states have call predecessors, (4231), 4231 states have call successors, (4231) [2022-11-25 17:34:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25850 states to 25850 states and 32400 transitions. [2022-11-25 17:34:50,910 INFO L78 Accepts]: Start accepts. Automaton has 25850 states and 32400 transitions. Word has length 373 [2022-11-25 17:34:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:34:50,911 INFO L495 AbstractCegarLoop]: Abstraction has 25850 states and 32400 transitions. [2022-11-25 17:34:50,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) [2022-11-25 17:34:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25850 states and 32400 transitions. [2022-11-25 17:34:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-25 17:34:50,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:34:50,962 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:34:50,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:51,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e8856a-c729-44bf-9e6f-04fc90323c2a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-25 17:34:51,170 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:34:51,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash 12867067, now seen corresponding path program 1 times [2022-11-25 17:34:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:34:51,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284111797] [2022-11-25 17:34:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:51,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:34:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:34:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:34:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:34:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:34:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:34:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:34:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:34:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:34:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 17:34:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:34:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:34:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:34:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 17:34:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:34:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:34:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:34:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 17:34:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 17:34:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-25 17:34:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-25 17:34:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-25 17:34:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-25 17:34:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-25 17:34:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-25 17:34:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-25 17:34:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-25 17:34:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-25 17:34:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-11-25 17:34:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-25 17:34:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-25 17:34:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-25 17:34:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-25 17:34:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-25 17:34:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-25 17:34:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-25 17:34:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-11-25 17:34:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2022-11-25 17:34:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:34:51,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284111797] [2022-11-25 17:34:51,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284111797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:51,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:51,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:34:51,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36527177] [2022-11-25 17:34:51,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:51,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:34:51,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:34:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:34:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:34:51,627 INFO L87 Difference]: Start difference. First operand 25850 states and 32400 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25)