./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro --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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- 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-8393723 [2022-11-18 20:19:03,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:19:03,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:19:03,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:19:03,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:19:03,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:19:03,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:19:03,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:19:03,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:19:03,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:19:03,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:19:04,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:19:04,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:19:04,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:19:04,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:19:04,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:19:04,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:19:04,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:19:04,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:19:04,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:19:04,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:19:04,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:19:04,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:19:04,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:19:04,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:19:04,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:19:04,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:19:04,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:19:04,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:19:04,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:19:04,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:19:04,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:19:04,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:19:04,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:19:04,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:19:04,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:19:04,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:19:04,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:19:04,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:19:04,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:19:04,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:19:04,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:19:04,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:19:04,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:19:04,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:19:04,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:19:04,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:19:04,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:19:04,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:19:04,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:19:04,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:19:04,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:19:04,064 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:19:04,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:19:04,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:19:04,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:19:04,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:19:04,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:19:04,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:19:04,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:19:04,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:19:04,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:19:04,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:19:04,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:19:04,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:19:04,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:19:04,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:04,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:19:04,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:19:04,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:19:04,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:19:04,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:19:04,069 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:19:04,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:19:04,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:19:04,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2022-11-18 20:19:04,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:19:04,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:19:04,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:19:04,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:19:04,469 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:19:04,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-11-18 20:19:04,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/data/5ab022907/0abb3bfb036b4b44b1fd08c08008fd3e/FLAG5bb184165 [2022-11-18 20:19:05,192 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:19:05,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-11-18 20:19:05,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/data/5ab022907/0abb3bfb036b4b44b1fd08c08008fd3e/FLAG5bb184165 [2022-11-18 20:19:05,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/data/5ab022907/0abb3bfb036b4b44b1fd08c08008fd3e [2022-11-18 20:19:05,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:19:05,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:19:05,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:05,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:19:05,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:19:05,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9ec149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:05, skipping insertion in model container [2022-11-18 20:19:05,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:19:05" (1/1) ... [2022-11-18 20:19:05,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:19:05,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:19:06,116 WARN L234 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_63bca835-f1c8-4cdf-989c-4e95b09f8611/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2022-11-18 20:19:06,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:06,277 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:19:06,389 WARN L234 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_63bca835-f1c8-4cdf-989c-4e95b09f8611/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2022-11-18 20:19:06,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:19:06,477 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:19:06,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06 WrapperNode [2022-11-18 20:19:06,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:19:06,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:06,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:19:06,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:19:06,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,575 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1118 [2022-11-18 20:19:06,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:19:06,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:19:06,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:19:06,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:19:06,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,676 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:19:06,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:19:06,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:19:06,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:19:06,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (1/1) ... [2022-11-18 20:19:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:19:06,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:06,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:19:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:19:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-18 20:19:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-18 20:19:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:19:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-18 20:19:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-18 20:19:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-18 20:19:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-18 20:19:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-18 20:19:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-18 20:19:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-18 20:19:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-18 20:19:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-18 20:19:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-18 20:19:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 20:19:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 20:19:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 20:19:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 20:19:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-18 20:19:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-18 20:19:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-18 20:19:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-18 20:19:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-18 20:19:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-18 20:19:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-18 20:19:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-18 20:19:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-18 20:19:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-18 20:19:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-18 20:19:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-18 20:19:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-18 20:19:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-18 20:19:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-18 20:19:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-18 20:19:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-18 20:19:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-18 20:19:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-18 20:19:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-18 20:19:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-18 20:19:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-18 20:19:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-18 20:19:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-18 20:19:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:19:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-18 20:19:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-18 20:19:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-18 20:19:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-18 20:19:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-18 20:19:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-18 20:19:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:19:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:19:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-18 20:19:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-18 20:19:06,964 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:19:06,981 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:19:08,267 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:19:08,278 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:19:08,278 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:19:08,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:08 BoogieIcfgContainer [2022-11-18 20:19:08,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:19:08,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:19:08,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:19:08,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:19:08,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:19:05" (1/3) ... [2022-11-18 20:19:08,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a4c561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:08, skipping insertion in model container [2022-11-18 20:19:08,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:19:06" (2/3) ... [2022-11-18 20:19:08,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a4c561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:19:08, skipping insertion in model container [2022-11-18 20:19:08,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:19:08" (3/3) ... [2022-11-18 20:19:08,290 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2022-11-18 20:19:08,310 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:19:08,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:19:08,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:19:08,384 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;@13b615, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:19:08,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:19:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-18 20:19:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 20:19:08,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:08,425 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:08,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 962722650, now seen corresponding path program 1 times [2022-11-18 20:19:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:08,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878971792] [2022-11-18 20:19:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:08,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:19:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:19:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:09,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878971792] [2022-11-18 20:19:09,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878971792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467328060] [2022-11-18 20:19:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:09,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:09,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:09,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:19:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:10,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:19:10,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:19:10,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:10,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467328060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:10,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:10,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-11-18 20:19:10,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927131134] [2022-11-18 20:19:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:19:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:19:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:19:10,381 INFO L87 Difference]: Start difference. First operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:19:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:10,448 INFO L93 Difference]: Finished difference Result 582 states and 965 transitions. [2022-11-18 20:19:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:19:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2022-11-18 20:19:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:10,469 INFO L225 Difference]: With dead ends: 582 [2022-11-18 20:19:10,469 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 20:19:10,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:19:10,475 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:10,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 20:19:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-18 20:19:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6898148148148149) internal successors, (730), 451 states have internal predecessors, (730), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 919 transitions. [2022-11-18 20:19:10,562 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 919 transitions. Word has length 125 [2022-11-18 20:19:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:10,564 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 919 transitions. [2022-11-18 20:19:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:19:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 919 transitions. [2022-11-18 20:19:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 20:19:10,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:10,572 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:10,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:10,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:19:10,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash 612259598, now seen corresponding path program 1 times [2022-11-18 20:19:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:10,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600550248] [2022-11-18 20:19:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:10,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:19:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:19:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:19:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:11,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:11,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600550248] [2022-11-18 20:19:11,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600550248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:11,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651227433] [2022-11-18 20:19:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:11,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:11,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:11,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:11,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:19:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:12,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:19:12,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:12,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651227433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:12,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:12,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996460005] [2022-11-18 20:19:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:12,124 INFO L87 Difference]: Start difference. First operand 553 states and 919 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:12,262 INFO L93 Difference]: Finished difference Result 1097 states and 1830 transitions. [2022-11-18 20:19:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-11-18 20:19:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:12,268 INFO L225 Difference]: With dead ends: 1097 [2022-11-18 20:19:12,268 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 20:19:12,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:12,276 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 14 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:12,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2708 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 20:19:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-18 20:19:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6875) internal successors, (729), 451 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 918 transitions. [2022-11-18 20:19:12,314 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 918 transitions. Word has length 127 [2022-11-18 20:19:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:12,315 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 918 transitions. [2022-11-18 20:19:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 918 transitions. [2022-11-18 20:19:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:19:12,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:12,320 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:12,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:12,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1908031680, now seen corresponding path program 1 times [2022-11-18 20:19:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:12,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172688289] [2022-11-18 20:19:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:19:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:12,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:19:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:13,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172688289] [2022-11-18 20:19:13,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172688289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:13,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863925123] [2022-11-18 20:19:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:13,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:13,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:13,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:19:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:13,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:13,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:19:13,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:13,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863925123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:13,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:13,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951524219] [2022-11-18 20:19:13,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:13,832 INFO L87 Difference]: Start difference. First operand 553 states and 918 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:13,909 INFO L93 Difference]: Finished difference Result 1097 states and 1828 transitions. [2022-11-18 20:19:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2022-11-18 20:19:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:13,915 INFO L225 Difference]: With dead ends: 1097 [2022-11-18 20:19:13,915 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 20:19:13,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:13,919 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 12 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:13,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2708 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 20:19:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-18 20:19:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6851851851851851) internal successors, (728), 451 states have internal predecessors, (728), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 917 transitions. [2022-11-18 20:19:13,948 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 917 transitions. Word has length 129 [2022-11-18 20:19:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:13,949 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 917 transitions. [2022-11-18 20:19:13,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 917 transitions. [2022-11-18 20:19:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:19:13,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:13,953 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:13,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:14,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1032252274, now seen corresponding path program 1 times [2022-11-18 20:19:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881854036] [2022-11-18 20:19:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:19:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:19:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:14,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:14,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881854036] [2022-11-18 20:19:14,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881854036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:14,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922094362] [2022-11-18 20:19:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:14,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:14,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:14,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:19:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:15,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:19:15,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:15,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922094362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:15,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:15,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432416985] [2022-11-18 20:19:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:15,335 INFO L87 Difference]: Start difference. First operand 553 states and 917 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:15,435 INFO L93 Difference]: Finished difference Result 1104 states and 1835 transitions. [2022-11-18 20:19:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:15,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-11-18 20:19:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:15,441 INFO L225 Difference]: With dead ends: 1104 [2022-11-18 20:19:15,441 INFO L226 Difference]: Without dead ends: 562 [2022-11-18 20:19:15,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:15,445 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 20 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:15,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-18 20:19:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-11-18 20:19:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6818181818181819) internal successors, (740), 459 states have internal predecessors, (740), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 929 transitions. [2022-11-18 20:19:15,486 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 929 transitions. Word has length 131 [2022-11-18 20:19:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:15,487 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 929 transitions. [2022-11-18 20:19:15,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 929 transitions. [2022-11-18 20:19:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:19:15,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:15,499 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:15,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 20:19:15,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1063424087, now seen corresponding path program 1 times [2022-11-18 20:19:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:15,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552876878] [2022-11-18 20:19:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:19:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:19:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:19:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552876878] [2022-11-18 20:19:16,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552876878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225230868] [2022-11-18 20:19:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:16,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:16,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:19:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:19:16,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:16,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225230868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:16,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:16,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985922442] [2022-11-18 20:19:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:16,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:16,788 INFO L87 Difference]: Start difference. First operand 562 states and 929 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:16,879 INFO L93 Difference]: Finished difference Result 1106 states and 1836 transitions. [2022-11-18 20:19:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:16,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-11-18 20:19:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:16,885 INFO L225 Difference]: With dead ends: 1106 [2022-11-18 20:19:16,886 INFO L226 Difference]: Without dead ends: 562 [2022-11-18 20:19:16,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:16,891 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 18 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2708 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 [2022-11-18 20:19:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-18 20:19:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-11-18 20:19:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6795454545454545) internal successors, (739), 459 states have internal predecessors, (739), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 928 transitions. [2022-11-18 20:19:16,922 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 928 transitions. Word has length 132 [2022-11-18 20:19:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:16,922 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 928 transitions. [2022-11-18 20:19:16,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 928 transitions. [2022-11-18 20:19:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 20:19:16,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:16,928 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:16,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:17,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:17,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1178788366, now seen corresponding path program 1 times [2022-11-18 20:19:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604307517] [2022-11-18 20:19:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:19:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:19:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:19:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604307517] [2022-11-18 20:19:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604307517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568485579] [2022-11-18 20:19:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:17,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:17,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:17,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:19:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:18,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:19:18,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:18,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568485579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:18,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:18,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245465267] [2022-11-18 20:19:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:18,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:18,215 INFO L87 Difference]: Start difference. First operand 562 states and 928 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:18,286 INFO L93 Difference]: Finished difference Result 1106 states and 1835 transitions. [2022-11-18 20:19:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:18,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-11-18 20:19:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:18,291 INFO L225 Difference]: With dead ends: 1106 [2022-11-18 20:19:18,291 INFO L226 Difference]: Without dead ends: 562 [2022-11-18 20:19:18,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:18,296 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 17 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:18,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2708 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-18 20:19:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-11-18 20:19:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6772727272727272) internal successors, (738), 459 states have internal predecessors, (738), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-11-18 20:19:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 927 transitions. [2022-11-18 20:19:18,321 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 927 transitions. Word has length 133 [2022-11-18 20:19:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:18,322 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 927 transitions. [2022-11-18 20:19:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 927 transitions. [2022-11-18 20:19:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:19:18,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:18,327 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:18,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:19:18,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:18,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash 390848205, now seen corresponding path program 1 times [2022-11-18 20:19:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:18,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264164397] [2022-11-18 20:19:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:18,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:19:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:19:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:19:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264164397] [2022-11-18 20:19:19,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264164397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238159275] [2022-11-18 20:19:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:19,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:19,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:19,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:19:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:19:19,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:19,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:19,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238159275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:19,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:19,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-18 20:19:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931761665] [2022-11-18 20:19:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:19,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:19,677 INFO L87 Difference]: Start difference. First operand 562 states and 927 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:19,846 INFO L93 Difference]: Finished difference Result 1125 states and 1865 transitions. [2022-11-18 20:19:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-11-18 20:19:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:19,852 INFO L225 Difference]: With dead ends: 1125 [2022-11-18 20:19:19,852 INFO L226 Difference]: Without dead ends: 585 [2022-11-18 20:19:19,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:19,857 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 148 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:19,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5323 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-18 20:19:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2022-11-18 20:19:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 477 states have internal predecessors, (764), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-11-18 20:19:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 958 transitions. [2022-11-18 20:19:19,890 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 958 transitions. Word has length 134 [2022-11-18 20:19:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:19,890 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 958 transitions. [2022-11-18 20:19:19,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 958 transitions. [2022-11-18 20:19:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:19:19,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:19,897 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:19,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 20:19:20,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:19:20,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1677330510, now seen corresponding path program 1 times [2022-11-18 20:19:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107166043] [2022-11-18 20:19:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:19:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:19:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:19:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107166043] [2022-11-18 20:19:20,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107166043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701293061] [2022-11-18 20:19:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:20,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:20,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:20,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:20,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:19:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:21,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:21,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:21,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701293061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:21,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:21,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618766472] [2022-11-18 20:19:21,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:21,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:21,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:21,147 INFO L87 Difference]: Start difference. First operand 581 states and 958 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:21,299 INFO L93 Difference]: Finished difference Result 1166 states and 1939 transitions. [2022-11-18 20:19:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:21,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-11-18 20:19:21,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:21,304 INFO L225 Difference]: With dead ends: 1166 [2022-11-18 20:19:21,304 INFO L226 Difference]: Without dead ends: 581 [2022-11-18 20:19:21,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:21,340 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 135 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:21,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2525 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-18 20:19:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-11-18 20:19:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 477 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-11-18 20:19:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 953 transitions. [2022-11-18 20:19:21,364 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 953 transitions. Word has length 134 [2022-11-18 20:19:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:21,366 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 953 transitions. [2022-11-18 20:19:21,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 953 transitions. [2022-11-18 20:19:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:19:21,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:21,371 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:21,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:19:21,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 572426598, now seen corresponding path program 1 times [2022-11-18 20:19:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:21,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786060679] [2022-11-18 20:19:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:19:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:19:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786060679] [2022-11-18 20:19:22,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786060679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402265717] [2022-11-18 20:19:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:22,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:22,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:19:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:22,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:22,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:22,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:22,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402265717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:22,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:22,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894524246] [2022-11-18 20:19:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:22,592 INFO L87 Difference]: Start difference. First operand 581 states and 953 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:22,736 INFO L93 Difference]: Finished difference Result 1166 states and 1929 transitions. [2022-11-18 20:19:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-11-18 20:19:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:22,741 INFO L225 Difference]: With dead ends: 1166 [2022-11-18 20:19:22,742 INFO L226 Difference]: Without dead ends: 581 [2022-11-18 20:19:22,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:22,745 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 129 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:22,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2525 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-18 20:19:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-11-18 20:19:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6535087719298245) internal successors, (754), 477 states have internal predecessors, (754), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-11-18 20:19:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 948 transitions. [2022-11-18 20:19:22,768 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 948 transitions. Word has length 136 [2022-11-18 20:19:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:22,769 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 948 transitions. [2022-11-18 20:19:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 948 transitions. [2022-11-18 20:19:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:19:22,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:22,773 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:22,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:22,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:19:22,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash -516128210, now seen corresponding path program 1 times [2022-11-18 20:19:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696655919] [2022-11-18 20:19:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:19:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:19:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:19:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696655919] [2022-11-18 20:19:23,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696655919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:23,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569406584] [2022-11-18 20:19:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:23,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:19:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:23,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:23,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:23,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:23,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569406584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:23,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915977869] [2022-11-18 20:19:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:23,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:23,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:23,997 INFO L87 Difference]: Start difference. First operand 581 states and 948 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:24,199 INFO L93 Difference]: Finished difference Result 1202 states and 1977 transitions. [2022-11-18 20:19:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:24,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-18 20:19:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:24,204 INFO L225 Difference]: With dead ends: 1202 [2022-11-18 20:19:24,204 INFO L226 Difference]: Without dead ends: 647 [2022-11-18 20:19:24,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:24,208 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 179 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:24,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-18 20:19:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 632. [2022-11-18 20:19:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-11-18 20:19:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-11-18 20:19:24,245 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 138 [2022-11-18 20:19:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:24,246 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-11-18 20:19:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-11-18 20:19:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:19:24,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:24,250 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:24,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:24,459 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 916705563, now seen corresponding path program 1 times [2022-11-18 20:19:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:24,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444812380] [2022-11-18 20:19:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:24,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:19:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:25,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444812380] [2022-11-18 20:19:25,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444812380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:25,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128665672] [2022-11-18 20:19:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:25,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:25,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:25,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:25,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:19:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:25,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:19:25,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:25,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:25,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128665672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:25,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:25,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-18 20:19:25,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715450141] [2022-11-18 20:19:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:25,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:25,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:25,636 INFO L87 Difference]: Start difference. First operand 632 states and 1032 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:25,823 INFO L93 Difference]: Finished difference Result 1194 states and 1957 transitions. [2022-11-18 20:19:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:19:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-11-18 20:19:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:25,828 INFO L225 Difference]: With dead ends: 1194 [2022-11-18 20:19:25,828 INFO L226 Difference]: Without dead ends: 654 [2022-11-18 20:19:25,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:25,831 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 177 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:25,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6095 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-11-18 20:19:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 632. [2022-11-18 20:19:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-11-18 20:19:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-11-18 20:19:25,901 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 139 [2022-11-18 20:19:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:25,902 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-11-18 20:19:25,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-11-18 20:19:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:19:25,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:25,907 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:25,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:26,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:26,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash 781948475, now seen corresponding path program 1 times [2022-11-18 20:19:26,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:26,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690630132] [2022-11-18 20:19:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:19:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:19:26,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:26,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690630132] [2022-11-18 20:19:26,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690630132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:26,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398298906] [2022-11-18 20:19:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:26,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:26,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:26,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:26,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:19:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:19:27,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:27,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398298906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:27,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:27,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518385686] [2022-11-18 20:19:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:27,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:27,074 INFO L87 Difference]: Start difference. First operand 632 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:27,246 INFO L93 Difference]: Finished difference Result 1202 states and 1975 transitions. [2022-11-18 20:19:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-18 20:19:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:27,251 INFO L225 Difference]: With dead ends: 1202 [2022-11-18 20:19:27,251 INFO L226 Difference]: Without dead ends: 632 [2022-11-18 20:19:27,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:27,254 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 173 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-18 20:19:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2022-11-18 20:19:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.6482213438735178) internal successors, (834), 527 states have internal predecessors, (834), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-11-18 20:19:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1027 transitions. [2022-11-18 20:19:27,276 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1027 transitions. Word has length 139 [2022-11-18 20:19:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:27,277 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1027 transitions. [2022-11-18 20:19:27,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1027 transitions. [2022-11-18 20:19:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:19:27,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:27,281 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:27,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:27,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2038984762, now seen corresponding path program 1 times [2022-11-18 20:19:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:27,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12763269] [2022-11-18 20:19:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:19:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:28,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:28,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12763269] [2022-11-18 20:19:28,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12763269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:28,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862168902] [2022-11-18 20:19:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:28,122 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:28,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:19:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:28,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:19:28,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:19:28,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:28,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862168902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:28,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:28,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-18 20:19:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730862306] [2022-11-18 20:19:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:28,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:28,601 INFO L87 Difference]: Start difference. First operand 632 states and 1027 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:28,721 INFO L93 Difference]: Finished difference Result 1129 states and 1849 transitions. [2022-11-18 20:19:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:28,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-11-18 20:19:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:28,726 INFO L225 Difference]: With dead ends: 1129 [2022-11-18 20:19:28,726 INFO L226 Difference]: Without dead ends: 656 [2022-11-18 20:19:28,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:28,730 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 134 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:28,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5282 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-18 20:19:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 651. [2022-11-18 20:19:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-11-18 20:19:28,753 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 139 [2022-11-18 20:19:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:28,754 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-11-18 20:19:28,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-11-18 20:19:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:19:28,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:28,758 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:28,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:19:28,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash 429591986, now seen corresponding path program 1 times [2022-11-18 20:19:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:28,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928026298] [2022-11-18 20:19:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:28,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:19:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928026298] [2022-11-18 20:19:29,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928026298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588578193] [2022-11-18 20:19:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:29,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:29,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:29,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:19:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:29,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:19:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:19:30,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:30,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588578193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:30,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:30,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-18 20:19:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473041275] [2022-11-18 20:19:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:30,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:30,042 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:30,164 INFO L93 Difference]: Finished difference Result 1159 states and 1900 transitions. [2022-11-18 20:19:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-18 20:19:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:30,170 INFO L225 Difference]: With dead ends: 1159 [2022-11-18 20:19:30,170 INFO L226 Difference]: Without dead ends: 686 [2022-11-18 20:19:30,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:30,174 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 143 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:30,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5272 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-18 20:19:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 651. [2022-11-18 20:19:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-11-18 20:19:30,199 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-11-18 20:19:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:30,200 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-11-18 20:19:30,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-11-18 20:19:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:19:30,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:30,205 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:30,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:30,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:19:30,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1424927282, now seen corresponding path program 1 times [2022-11-18 20:19:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:30,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017750589] [2022-11-18 20:19:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:19:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017750589] [2022-11-18 20:19:31,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017750589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908170343] [2022-11-18 20:19:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:31,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:31,029 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:31,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:19:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:31,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:19:31,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:19:31,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:31,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908170343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:31,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:31,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-18 20:19:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999091008] [2022-11-18 20:19:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:31,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:31,525 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:31,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:31,716 INFO L93 Difference]: Finished difference Result 1144 states and 1874 transitions. [2022-11-18 20:19:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:19:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-18 20:19:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:31,722 INFO L225 Difference]: With dead ends: 1144 [2022-11-18 20:19:31,722 INFO L226 Difference]: Without dead ends: 671 [2022-11-18 20:19:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:31,725 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 177 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6103 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-18 20:19:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-11-18 20:19:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-11-18 20:19:31,791 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-11-18 20:19:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-11-18 20:19:31,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-11-18 20:19:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:19:31,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:31,811 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:31,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:32,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:19:32,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash 401422641, now seen corresponding path program 1 times [2022-11-18 20:19:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:32,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323436557] [2022-11-18 20:19:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:32,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:19:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:19:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:19:32,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:32,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323436557] [2022-11-18 20:19:32,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323436557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:32,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461828587] [2022-11-18 20:19:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:32,577 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:32,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:19:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:32,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:32,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:19:33,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461828587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:33,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:33,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308858985] [2022-11-18 20:19:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:33,034 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:33,099 INFO L93 Difference]: Finished difference Result 1196 states and 1959 transitions. [2022-11-18 20:19:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-11-18 20:19:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:33,104 INFO L225 Difference]: With dead ends: 1196 [2022-11-18 20:19:33,104 INFO L226 Difference]: Without dead ends: 651 [2022-11-18 20:19:33,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:33,107 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 23 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2677 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-18 20:19:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2022-11-18 20:19:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-11-18 20:19:33,132 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 140 [2022-11-18 20:19:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:33,132 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-11-18 20:19:33,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-11-18 20:19:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:19:33,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:33,137 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:33,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:33,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:33,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 144732242, now seen corresponding path program 1 times [2022-11-18 20:19:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:33,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157082743] [2022-11-18 20:19:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:19:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:33,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:33,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157082743] [2022-11-18 20:19:33,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157082743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:33,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492987668] [2022-11-18 20:19:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:33,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:33,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:33,958 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:33,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:19:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:34,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:19:34,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:19:34,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:34,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492987668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:34,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:34,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-11-18 20:19:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43815434] [2022-11-18 20:19:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:34,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:19:34,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:19:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:34,455 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:34,655 INFO L93 Difference]: Finished difference Result 1144 states and 1871 transitions. [2022-11-18 20:19:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:19:34,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-11-18 20:19:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:34,661 INFO L225 Difference]: With dead ends: 1144 [2022-11-18 20:19:34,662 INFO L226 Difference]: Without dead ends: 671 [2022-11-18 20:19:34,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:34,665 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 185 mSDsluCounter, 5178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:34,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6060 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-18 20:19:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-11-18 20:19:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-11-18 20:19:34,703 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 141 [2022-11-18 20:19:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:34,704 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-11-18 20:19:34,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-18 20:19:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-11-18 20:19:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:19:34,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:34,711 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:34,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:34,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:19:34,920 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 278048503, now seen corresponding path program 1 times [2022-11-18 20:19:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357328677] [2022-11-18 20:19:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:19:35,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357328677] [2022-11-18 20:19:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357328677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241896655] [2022-11-18 20:19:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:35,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:35,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:35,554 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:35,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:19:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:35,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:19:35,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:19:35,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:35,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241896655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:35,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:35,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101453057] [2022-11-18 20:19:35,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:35,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:35,975 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:36,048 INFO L93 Difference]: Finished difference Result 1252 states and 2041 transitions. [2022-11-18 20:19:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-11-18 20:19:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:36,053 INFO L225 Difference]: With dead ends: 1252 [2022-11-18 20:19:36,054 INFO L226 Difference]: Without dead ends: 687 [2022-11-18 20:19:36,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:36,057 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 38 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:36,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2653 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-18 20:19:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 675. [2022-11-18 20:19:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 546 states have (on average 1.619047619047619) internal successors, (884), 569 states have internal predecessors, (884), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-11-18 20:19:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1081 transitions. [2022-11-18 20:19:36,085 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1081 transitions. Word has length 142 [2022-11-18 20:19:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:36,085 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1081 transitions. [2022-11-18 20:19:36,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:19:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1081 transitions. [2022-11-18 20:19:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:19:36,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:36,090 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:36,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:19:36,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2115711700, now seen corresponding path program 1 times [2022-11-18 20:19:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145469111] [2022-11-18 20:19:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:19:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:19:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:19:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:19:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:36,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145469111] [2022-11-18 20:19:36,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145469111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:36,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305024634] [2022-11-18 20:19:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:36,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:36,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:36,863 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:36,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:19:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:37,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:37,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:37,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305024634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:37,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:37,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-18 20:19:37,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947201770] [2022-11-18 20:19:37,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:37,391 INFO L87 Difference]: Start difference. First operand 675 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 20:19:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:38,011 INFO L93 Difference]: Finished difference Result 1151 states and 1893 transitions. [2022-11-18 20:19:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 142 [2022-11-18 20:19:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:38,017 INFO L225 Difference]: With dead ends: 1151 [2022-11-18 20:19:38,017 INFO L226 Difference]: Without dead ends: 683 [2022-11-18 20:19:38,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:38,020 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 842 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:38,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2276 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:19:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-18 20:19:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-11-18 20:19:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 553 states have (on average 1.620253164556962) internal successors, (896), 576 states have internal predecessors, (896), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (99), 92 states have call predecessors, (99), 94 states have call successors, (99) [2022-11-18 20:19:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1094 transitions. [2022-11-18 20:19:38,049 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1094 transitions. Word has length 142 [2022-11-18 20:19:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:38,050 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1094 transitions. [2022-11-18 20:19:38,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 20:19:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1094 transitions. [2022-11-18 20:19:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 20:19:38,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:38,054 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:38,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:38,262 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -990744076, now seen corresponding path program 1 times [2022-11-18 20:19:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:38,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486017450] [2022-11-18 20:19:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:38,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:19:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:19:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:19:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:19:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486017450] [2022-11-18 20:19:38,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486017450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289955293] [2022-11-18 20:19:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:38,824 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:38,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:19:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:39,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:39,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:39,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:39,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289955293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:39,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:39,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-18 20:19:39,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640782238] [2022-11-18 20:19:39,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:39,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:39,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:39,384 INFO L87 Difference]: Start difference. First operand 683 states and 1094 transitions. Second operand has 5 states, 5 states have (on average 18.4) 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) [2022-11-18 20:19:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:39,969 INFO L93 Difference]: Finished difference Result 1167 states and 1916 transitions. [2022-11-18 20:19:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:39,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) 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 144 [2022-11-18 20:19:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:39,975 INFO L225 Difference]: With dead ends: 1167 [2022-11-18 20:19:39,975 INFO L226 Difference]: Without dead ends: 691 [2022-11-18 20:19:39,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:39,979 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 845 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:39,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2276 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-18 20:19:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-11-18 20:19:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 560 states have (on average 1.6214285714285714) internal successors, (908), 583 states have internal predecessors, (908), 99 states have call successors, (99), 28 states have call predecessors, (99), 31 states have return successors, (100), 92 states have call predecessors, (100), 94 states have call successors, (100) [2022-11-18 20:19:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1107 transitions. [2022-11-18 20:19:40,007 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1107 transitions. Word has length 144 [2022-11-18 20:19:40,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:40,008 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1107 transitions. [2022-11-18 20:19:40,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) 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) [2022-11-18 20:19:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1107 transitions. [2022-11-18 20:19:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:19:40,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:40,013 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:40,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 20:19:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:40,221 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash -193570132, now seen corresponding path program 1 times [2022-11-18 20:19:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:40,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267082147] [2022-11-18 20:19:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:19:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:19:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:19:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:19:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:19:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:40,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267082147] [2022-11-18 20:19:40,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267082147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:40,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942091206] [2022-11-18 20:19:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:40,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:40,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:40,761 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:40,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:19:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:41,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:41,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:41,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:41,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942091206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:41,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:41,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-18 20:19:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768904200] [2022-11-18 20:19:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:41,286 INFO L87 Difference]: Start difference. First operand 691 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 18.8) 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) [2022-11-18 20:19:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:41,886 INFO L93 Difference]: Finished difference Result 1183 states and 1939 transitions. [2022-11-18 20:19:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) 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 146 [2022-11-18 20:19:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:41,891 INFO L225 Difference]: With dead ends: 1183 [2022-11-18 20:19:41,892 INFO L226 Difference]: Without dead ends: 699 [2022-11-18 20:19:41,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:41,895 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 831 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:41,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2276 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-18 20:19:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-11-18 20:19:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 567 states have (on average 1.6225749559082892) internal successors, (920), 590 states have internal predecessors, (920), 99 states have call successors, (99), 29 states have call predecessors, (99), 32 states have return successors, (101), 92 states have call predecessors, (101), 94 states have call successors, (101) [2022-11-18 20:19:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1120 transitions. [2022-11-18 20:19:41,924 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1120 transitions. Word has length 146 [2022-11-18 20:19:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:41,924 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1120 transitions. [2022-11-18 20:19:41,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) 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) [2022-11-18 20:19:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1120 transitions. [2022-11-18 20:19:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:19:41,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:41,929 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:41,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:42,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2115048172, now seen corresponding path program 1 times [2022-11-18 20:19:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:42,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114868099] [2022-11-18 20:19:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:19:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:19:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:19:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:19:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:19:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114868099] [2022-11-18 20:19:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114868099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953305293] [2022-11-18 20:19:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:42,703 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:42,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:19:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:43,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:43,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:43,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953305293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:43,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:43,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-18 20:19:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127327704] [2022-11-18 20:19:43,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:43,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:43,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:43,219 INFO L87 Difference]: Start difference. First operand 699 states and 1120 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-11-18 20:19:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:43,790 INFO L93 Difference]: Finished difference Result 1199 states and 1962 transitions. [2022-11-18 20:19:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:43,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 148 [2022-11-18 20:19:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:43,796 INFO L225 Difference]: With dead ends: 1199 [2022-11-18 20:19:43,796 INFO L226 Difference]: Without dead ends: 707 [2022-11-18 20:19:43,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:43,798 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 833 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:43,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2276 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:19:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-18 20:19:43,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-11-18 20:19:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 574 states have (on average 1.6236933797909407) internal successors, (932), 597 states have internal predecessors, (932), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-11-18 20:19:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1133 transitions. [2022-11-18 20:19:43,827 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1133 transitions. Word has length 148 [2022-11-18 20:19:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:43,827 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1133 transitions. [2022-11-18 20:19:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-11-18 20:19:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1133 transitions. [2022-11-18 20:19:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:19:43,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:43,832 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:43,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:44,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:19:44,040 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:44,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1609352748, now seen corresponding path program 1 times [2022-11-18 20:19:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:44,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154351074] [2022-11-18 20:19:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:19:44,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154351074] [2022-11-18 20:19:44,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154351074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043049280] [2022-11-18 20:19:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:44,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:44,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:44,647 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:44,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:19:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:44,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:19:44,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:19:45,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:45,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043049280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:45,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:45,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-18 20:19:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257720585] [2022-11-18 20:19:45,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:45,235 INFO L87 Difference]: Start difference. First operand 707 states and 1133 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:19:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:45,617 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2022-11-18 20:19:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 150 [2022-11-18 20:19:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:45,622 INFO L225 Difference]: With dead ends: 756 [2022-11-18 20:19:45,623 INFO L226 Difference]: Without dead ends: 741 [2022-11-18 20:19:45,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:45,624 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 867 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:45,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1612 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:19:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-18 20:19:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 710. [2022-11-18 20:19:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6204506065857887) internal successors, (935), 600 states have internal predecessors, (935), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-11-18 20:19:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1136 transitions. [2022-11-18 20:19:45,659 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1136 transitions. Word has length 150 [2022-11-18 20:19:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:45,659 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1136 transitions. [2022-11-18 20:19:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:19:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1136 transitions. [2022-11-18 20:19:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 20:19:45,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:45,664 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:45,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 20:19:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:19:45,872 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1229850585, now seen corresponding path program 1 times [2022-11-18 20:19:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:45,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069671128] [2022-11-18 20:19:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:19:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:46,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069671128] [2022-11-18 20:19:46,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069671128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:46,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828716220] [2022-11-18 20:19:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:46,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:46,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:46,483 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:46,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:19:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:46,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:19:46,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:19:46,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:46,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828716220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:46,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:46,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-18 20:19:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873638798] [2022-11-18 20:19:46,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:46,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:19:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:46,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:19:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:46,888 INFO L87 Difference]: Start difference. First operand 710 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 18.8) 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), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:19:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:46,934 INFO L93 Difference]: Finished difference Result 727 states and 1157 transitions. [2022-11-18 20:19:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:19:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) 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), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2022-11-18 20:19:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:46,938 INFO L225 Difference]: With dead ends: 727 [2022-11-18 20:19:46,938 INFO L226 Difference]: Without dead ends: 712 [2022-11-18 20:19:46,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:19:46,939 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 37 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:46,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-18 20:19:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 710. [2022-11-18 20:19:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6187175043327557) internal successors, (934), 600 states have internal predecessors, (934), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-11-18 20:19:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1135 transitions. [2022-11-18 20:19:46,973 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1135 transitions. Word has length 156 [2022-11-18 20:19:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:46,973 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1135 transitions. [2022-11-18 20:19:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) 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), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:19:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1135 transitions. [2022-11-18 20:19:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:19:46,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:46,978 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:46,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:19:47,187 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash -392192306, now seen corresponding path program 1 times [2022-11-18 20:19:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630376132] [2022-11-18 20:19:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:19:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:19:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:19:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:47,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630376132] [2022-11-18 20:19:47,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630376132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:47,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108910063] [2022-11-18 20:19:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:47,759 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:47,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:19:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:19:48,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:19:48,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:48,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108910063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:48,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:19:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131178798] [2022-11-18 20:19:48,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:48,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:19:48,185 INFO L87 Difference]: Start difference. First operand 710 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:19:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:48,266 INFO L93 Difference]: Finished difference Result 1394 states and 2240 transitions. [2022-11-18 20:19:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:48,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2022-11-18 20:19:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:48,272 INFO L225 Difference]: With dead ends: 1394 [2022-11-18 20:19:48,273 INFO L226 Difference]: Without dead ends: 679 [2022-11-18 20:19:48,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:19:48,277 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 11 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:48,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2676 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-18 20:19:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-11-18 20:19:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 549 states have (on average 1.6174863387978142) internal successors, (888), 570 states have internal predecessors, (888), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-11-18 20:19:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1085 transitions. [2022-11-18 20:19:48,344 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1085 transitions. Word has length 167 [2022-11-18 20:19:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:48,344 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1085 transitions. [2022-11-18 20:19:48,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:19:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1085 transitions. [2022-11-18 20:19:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-18 20:19:48,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:48,349 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:48,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:48,558 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 616808057, now seen corresponding path program 1 times [2022-11-18 20:19:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:48,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676074685] [2022-11-18 20:19:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:48,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:19:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:19:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:19:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676074685] [2022-11-18 20:19:49,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676074685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271036363] [2022-11-18 20:19:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:49,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:49,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:49,159 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:49,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:19:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:49,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:19:49,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:49,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:49,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271036363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:49,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:49,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-18 20:19:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157956714] [2022-11-18 20:19:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:19:49,634 INFO L87 Difference]: Start difference. First operand 679 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 20:19:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:49,738 INFO L93 Difference]: Finished difference Result 1327 states and 2134 transitions. [2022-11-18 20:19:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:19:49,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-11-18 20:19:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:49,743 INFO L225 Difference]: With dead ends: 1327 [2022-11-18 20:19:49,744 INFO L226 Difference]: Without dead ends: 679 [2022-11-18 20:19:49,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:19:49,747 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 143 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:49,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5303 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-18 20:19:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 658. [2022-11-18 20:19:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.6174242424242424) internal successors, (854), 549 states have internal predecessors, (854), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-11-18 20:19:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1051 transitions. [2022-11-18 20:19:49,777 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1051 transitions. Word has length 169 [2022-11-18 20:19:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:49,777 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1051 transitions. [2022-11-18 20:19:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 20:19:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1051 transitions. [2022-11-18 20:19:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-18 20:19:49,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:49,781 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:49,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:49,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:19:49,989 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1646008076, now seen corresponding path program 1 times [2022-11-18 20:19:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:49,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541024044] [2022-11-18 20:19:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:19:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:19:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:19:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:50,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541024044] [2022-11-18 20:19:50,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541024044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581802593] [2022-11-18 20:19:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:50,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:50,902 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:50,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:19:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:19:51,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:19:51,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:51,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581802593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:51,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:51,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-11-18 20:19:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265775276] [2022-11-18 20:19:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:51,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:19:51,357 INFO L87 Difference]: Start difference. First operand 658 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-11-18 20:19:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:51,480 INFO L93 Difference]: Finished difference Result 1285 states and 2068 transitions. [2022-11-18 20:19:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 171 [2022-11-18 20:19:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:51,485 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:19:51,485 INFO L226 Difference]: Without dead ends: 658 [2022-11-18 20:19:51,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:19:51,489 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 176 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:51,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:19:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-18 20:19:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2022-11-18 20:19:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.615530303030303) internal successors, (853), 549 states have internal predecessors, (853), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-11-18 20:19:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1050 transitions. [2022-11-18 20:19:51,517 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1050 transitions. Word has length 171 [2022-11-18 20:19:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:51,518 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1050 transitions. [2022-11-18 20:19:51,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-11-18 20:19:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1050 transitions. [2022-11-18 20:19:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-18 20:19:51,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:51,521 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:51,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-18 20:19:51,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:19:51,729 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash 495722115, now seen corresponding path program 1 times [2022-11-18 20:19:51,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:51,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340704252] [2022-11-18 20:19:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:19:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:19:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:19:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:52,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340704252] [2022-11-18 20:19:52,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340704252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:52,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753342170] [2022-11-18 20:19:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:52,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:52,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:52,575 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:19:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:52,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:19:52,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:19:52,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:52,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753342170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:52,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:52,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 16 [2022-11-18 20:19:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111846568] [2022-11-18 20:19:52,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:52,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:19:52,949 INFO L87 Difference]: Start difference. First operand 658 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-11-18 20:19:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:53,003 INFO L93 Difference]: Finished difference Result 1244 states and 2013 transitions. [2022-11-18 20:19:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:19:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 172 [2022-11-18 20:19:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:53,007 INFO L225 Difference]: With dead ends: 1244 [2022-11-18 20:19:53,007 INFO L226 Difference]: Without dead ends: 618 [2022-11-18 20:19:53,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:19:53,011 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 13 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:53,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2674 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-18 20:19:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2022-11-18 20:19:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6089613034623218) internal successors, (790), 510 states have internal predecessors, (790), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-18 20:19:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 983 transitions. [2022-11-18 20:19:53,035 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 983 transitions. Word has length 172 [2022-11-18 20:19:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:53,036 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 983 transitions. [2022-11-18 20:19:53,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2022-11-18 20:19:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 983 transitions. [2022-11-18 20:19:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 20:19:53,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:53,039 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:53,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:19:53,247 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:53,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1965948772, now seen corresponding path program 1 times [2022-11-18 20:19:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:53,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786991235] [2022-11-18 20:19:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:19:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:19:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:19:54,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:54,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786991235] [2022-11-18 20:19:54,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786991235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:54,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278304872] [2022-11-18 20:19:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:54,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:54,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:54,120 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:54,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:19:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:54,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:19:54,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 20:19:54,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:19:54,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278304872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:54,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:19:54,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-11-18 20:19:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950464292] [2022-11-18 20:19:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:19:54,527 INFO L87 Difference]: Start difference. First operand 618 states and 983 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:19:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:19:54,613 INFO L93 Difference]: Finished difference Result 1205 states and 1934 transitions. [2022-11-18 20:19:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2022-11-18 20:19:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:19:54,618 INFO L225 Difference]: With dead ends: 1205 [2022-11-18 20:19:54,618 INFO L226 Difference]: Without dead ends: 636 [2022-11-18 20:19:54,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:19:54,627 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 36 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:19:54,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2602 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:19:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-18 20:19:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 621. [2022-11-18 20:19:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 494 states have (on average 1.6072874493927125) internal successors, (794), 513 states have internal predecessors, (794), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-18 20:19:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 987 transitions. [2022-11-18 20:19:54,653 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 987 transitions. Word has length 173 [2022-11-18 20:19:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:19:54,654 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 987 transitions. [2022-11-18 20:19:54,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:19:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 987 transitions. [2022-11-18 20:19:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-18 20:19:54,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:19:54,657 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:54,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:19:54,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:19:54,866 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:19:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 661057393, now seen corresponding path program 1 times [2022-11-18 20:19:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:54,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526632792] [2022-11-18 20:19:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:19:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:19:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:19:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:19:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:19:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:19:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:19:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:19:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:19:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:19:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:19:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:19:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:19:55,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:55,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526632792] [2022-11-18 20:19:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526632792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:55,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:55,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:19:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918304484] [2022-11-18 20:19:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:19:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:19:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:19:55,393 INFO L87 Difference]: Start difference. First operand 621 states and 987 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:20:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:03,125 INFO L93 Difference]: Finished difference Result 1491 states and 2438 transitions. [2022-11-18 20:20:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:20:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-11-18 20:20:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:03,130 INFO L225 Difference]: With dead ends: 1491 [2022-11-18 20:20:03,130 INFO L226 Difference]: Without dead ends: 916 [2022-11-18 20:20:03,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:20:03,132 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1024 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:03,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1847 Invalid, 3327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [249 Valid, 3078 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 20:20:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-11-18 20:20:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 618. [2022-11-18 20:20:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6069246435845215) internal successors, (789), 510 states have internal predecessors, (789), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-18 20:20:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 982 transitions. [2022-11-18 20:20:03,281 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 982 transitions. Word has length 174 [2022-11-18 20:20:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:03,281 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 982 transitions. [2022-11-18 20:20:03,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:20:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 982 transitions. [2022-11-18 20:20:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-18 20:20:03,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:03,285 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:03,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:20:03,285 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1150689779, now seen corresponding path program 1 times [2022-11-18 20:20:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:03,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540450966] [2022-11-18 20:20:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:03,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:20:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:20:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:20:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:20:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540450966] [2022-11-18 20:20:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540450966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:03,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:20:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906547533] [2022-11-18 20:20:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:20:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:20:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:20:03,882 INFO L87 Difference]: Start difference. First operand 618 states and 982 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:20:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:11,845 INFO L93 Difference]: Finished difference Result 1536 states and 2499 transitions. [2022-11-18 20:20:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:20:11,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-11-18 20:20:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:11,852 INFO L225 Difference]: With dead ends: 1536 [2022-11-18 20:20:11,852 INFO L226 Difference]: Without dead ends: 961 [2022-11-18 20:20:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:20:11,854 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1063 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 3162 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1868 Invalid, 3412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 3162 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 20:20:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-18 20:20:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 622. [2022-11-18 20:20:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 495 states have (on average 1.6020202020202021) internal successors, (793), 514 states have internal predecessors, (793), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-18 20:20:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 986 transitions. [2022-11-18 20:20:11,976 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 986 transitions. Word has length 174 [2022-11-18 20:20:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:11,976 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 986 transitions. [2022-11-18 20:20:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-18 20:20:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 986 transitions. [2022-11-18 20:20:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-18 20:20:11,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:11,980 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:20:11,980 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1838219517, now seen corresponding path program 1 times [2022-11-18 20:20:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:11,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897100456] [2022-11-18 20:20:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:20:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:20:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:20:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:20:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:20:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-18 20:20:13,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:13,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897100456] [2022-11-18 20:20:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897100456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754353768] [2022-11-18 20:20:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:13,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:13,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:13,188 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:13,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 20:20:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:13,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:20:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:20:13,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:13,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754353768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:13,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:13,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-11-18 20:20:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565027363] [2022-11-18 20:20:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:20:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:20:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:20:13,901 INFO L87 Difference]: Start difference. First operand 622 states and 986 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:20:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:17,801 INFO L93 Difference]: Finished difference Result 1969 states and 3229 transitions. [2022-11-18 20:20:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:20:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 175 [2022-11-18 20:20:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:17,812 INFO L225 Difference]: With dead ends: 1969 [2022-11-18 20:20:17,812 INFO L226 Difference]: Without dead ends: 1466 [2022-11-18 20:20:17,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:20:17,817 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2974 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 5220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:17,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 2838 Invalid, 5220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 4611 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 20:20:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-11-18 20:20:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1345. [2022-11-18 20:20:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1064 states have (on average 1.6409774436090225) internal successors, (1746), 1103 states have internal predecessors, (1746), 213 states have call successors, (213), 62 states have call predecessors, (213), 67 states have return successors, (232), 205 states have call predecessors, (232), 208 states have call successors, (232) [2022-11-18 20:20:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2191 transitions. [2022-11-18 20:20:18,139 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2191 transitions. Word has length 175 [2022-11-18 20:20:18,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:18,140 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 2191 transitions. [2022-11-18 20:20:18,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:20:18,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2191 transitions. [2022-11-18 20:20:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-18 20:20:18,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:18,143 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:18,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-18 20:20:18,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:18,351 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash 5244925, now seen corresponding path program 1 times [2022-11-18 20:20:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:18,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881103575] [2022-11-18 20:20:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:20:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:20:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:20:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:20:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:20:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 20:20:19,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881103575] [2022-11-18 20:20:19,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881103575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:19,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127419188] [2022-11-18 20:20:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:19,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:19,669 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:19,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 20:20:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:20,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:20:20,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:20:20,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:20,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127419188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:20,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:20,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-11-18 20:20:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312006346] [2022-11-18 20:20:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:20,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:20:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:20:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:20:20,340 INFO L87 Difference]: Start difference. First operand 1345 states and 2191 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 20:20:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:23,613 INFO L93 Difference]: Finished difference Result 2830 states and 4656 transitions. [2022-11-18 20:20:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:20:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 177 [2022-11-18 20:20:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:23,635 INFO L225 Difference]: With dead ends: 2830 [2022-11-18 20:20:23,635 INFO L226 Difference]: Without dead ends: 1604 [2022-11-18 20:20:23,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:20:23,641 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2133 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 3817 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 3817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:23,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 2049 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 3817 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:20:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-11-18 20:20:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1416. [2022-11-18 20:20:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1116 states have (on average 1.6290322580645162) internal successors, (1818), 1161 states have internal predecessors, (1818), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-11-18 20:20:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2297 transitions. [2022-11-18 20:20:23,970 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2297 transitions. Word has length 177 [2022-11-18 20:20:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:23,971 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2297 transitions. [2022-11-18 20:20:23,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 20:20:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2297 transitions. [2022-11-18 20:20:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 20:20:23,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:23,973 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:23,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-18 20:20:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 20:20:24,175 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash 354987505, now seen corresponding path program 1 times [2022-11-18 20:20:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:24,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928200320] [2022-11-18 20:20:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:20:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:20:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:20:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:20:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:20:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:25,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928200320] [2022-11-18 20:20:25,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928200320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445854491] [2022-11-18 20:20:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:25,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:25,408 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 20:20:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:20:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:20:25,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:25,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445854491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:25,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:25,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-11-18 20:20:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505122791] [2022-11-18 20:20:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:25,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:20:25,878 INFO L87 Difference]: Start difference. First operand 1416 states and 2297 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:20:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:26,384 INFO L93 Difference]: Finished difference Result 1515 states and 2442 transitions. [2022-11-18 20:20:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:20:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2022-11-18 20:20:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:26,392 INFO L225 Difference]: With dead ends: 1515 [2022-11-18 20:20:26,392 INFO L226 Difference]: Without dead ends: 1500 [2022-11-18 20:20:26,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:20:26,393 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 67 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:26,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3648 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:20:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-18 20:20:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1422. [2022-11-18 20:20:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1122 states have (on average 1.625668449197861) internal successors, (1824), 1167 states have internal predecessors, (1824), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-11-18 20:20:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2303 transitions. [2022-11-18 20:20:26,780 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2303 transitions. Word has length 182 [2022-11-18 20:20:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:26,780 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2303 transitions. [2022-11-18 20:20:26,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:20:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2303 transitions. [2022-11-18 20:20:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-18 20:20:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:26,785 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:26,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:26,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:20:26,993 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash 488834352, now seen corresponding path program 1 times [2022-11-18 20:20:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:26,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419278222] [2022-11-18 20:20:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:20:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:20:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:20:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:20:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:20:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:20:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:20:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:20:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:20:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 20:20:28,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419278222] [2022-11-18 20:20:28,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419278222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391010911] [2022-11-18 20:20:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:28,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:28,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:28,491 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:28,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 20:20:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:28,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:20:28,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-18 20:20:28,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:28,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391010911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:28,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:28,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2022-11-18 20:20:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753922862] [2022-11-18 20:20:28,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:28,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:20:28,997 INFO L87 Difference]: Start difference. First operand 1422 states and 2303 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-18 20:20:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:29,450 INFO L93 Difference]: Finished difference Result 2709 states and 4434 transitions. [2022-11-18 20:20:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 275 [2022-11-18 20:20:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:29,458 INFO L225 Difference]: With dead ends: 2709 [2022-11-18 20:20:29,458 INFO L226 Difference]: Without dead ends: 1406 [2022-11-18 20:20:29,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:20:29,463 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:29,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 877 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:20:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-11-18 20:20:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1406. [2022-11-18 20:20:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1112 states have (on average 1.6214028776978417) internal successors, (1803), 1156 states have internal predecessors, (1803), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (253), 208 states have call predecessors, (253), 211 states have call successors, (253) [2022-11-18 20:20:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2271 transitions. [2022-11-18 20:20:29,854 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2271 transitions. Word has length 275 [2022-11-18 20:20:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:29,856 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2271 transitions. [2022-11-18 20:20:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-18 20:20:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2271 transitions. [2022-11-18 20:20:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-18 20:20:29,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:29,861 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:29,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:30,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:30,069 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:20:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash -259599323, now seen corresponding path program 1 times [2022-11-18 20:20:30,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:30,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715094028] [2022-11-18 20:20:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:20:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:20:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:20:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:20:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:20:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:20:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:20:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:20:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:20:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:20:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:20:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:20:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:20:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:20:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:20:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 20:20:31,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:31,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715094028] [2022-11-18 20:20:31,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715094028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:31,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427072221] [2022-11-18 20:20:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:31,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:31,658 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:31,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 20:20:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:32,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:20:32,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:20:32,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-18 20:20:32,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427072221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:32,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:32,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 22 [2022-11-18 20:20:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147652596] [2022-11-18 20:20:32,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:32,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:20:32,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:32,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:20:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:20:32,809 INFO L87 Difference]: Start difference. First operand 1406 states and 2271 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-11-18 20:21:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:32,495 INFO L93 Difference]: Finished difference Result 10671 states and 19050 transitions. [2022-11-18 20:21:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-11-18 20:21:32,495 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) Word has length 273 [2022-11-18 20:21:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:32,571 INFO L225 Difference]: With dead ends: 10671 [2022-11-18 20:21:32,571 INFO L226 Difference]: Without dead ends: 9384 [2022-11-18 20:21:32,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 630 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5957 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2045, Invalid=14211, Unknown=0, NotChecked=0, Total=16256 [2022-11-18 20:21:32,595 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 13847 mSDsluCounter, 16255 mSDsCounter, 0 mSdLazyCounter, 40656 mSolverCounterSat, 7715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13853 SdHoareTripleChecker+Valid, 17750 SdHoareTripleChecker+Invalid, 48371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 7715 IncrementalHoareTripleChecker+Valid, 40656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:32,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13853 Valid, 17750 Invalid, 48371 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [7715 Valid, 40656 Invalid, 0 Unknown, 0 Unchecked, 41.0s Time] [2022-11-18 20:21:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9384 states. [2022-11-18 20:21:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9384 to 5304. [2022-11-18 20:21:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 4115 states have (on average 1.5939246658566222) internal successors, (6559), 4293 states have internal predecessors, (6559), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-11-18 20:21:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 8699 transitions. [2022-11-18 20:21:34,697 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 8699 transitions. Word has length 273 [2022-11-18 20:21:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:34,697 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 8699 transitions. [2022-11-18 20:21:34,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-11-18 20:21:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 8699 transitions. [2022-11-18 20:21:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-18 20:21:34,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:34,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:34,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:34,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:21:34,920 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 223686760, now seen corresponding path program 1 times [2022-11-18 20:21:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023413661] [2022-11-18 20:21:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:21:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:21:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:21:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:21:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:21:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:21:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:21:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:21:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:21:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:21:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:21:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:21:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-18 20:21:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:35,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023413661] [2022-11-18 20:21:35,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023413661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:35,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:35,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278476962] [2022-11-18 20:21:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:35,788 INFO L87 Difference]: Start difference. First operand 5304 states and 8699 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:21:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:45,419 INFO L93 Difference]: Finished difference Result 11536 states and 19243 transitions. [2022-11-18 20:21:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:21:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-11-18 20:21:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:45,458 INFO L225 Difference]: With dead ends: 11536 [2022-11-18 20:21:45,459 INFO L226 Difference]: Without dead ends: 6389 [2022-11-18 20:21:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:21:45,477 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 949 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1891 Invalid, 3467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:21:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-11-18 20:21:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 5316. [2022-11-18 20:21:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 4127 states have (on average 1.5926823358371698) internal successors, (6573), 4305 states have internal predecessors, (6573), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-11-18 20:21:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 8713 transitions. [2022-11-18 20:21:47,244 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 8713 transitions. Word has length 278 [2022-11-18 20:21:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:47,244 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 8713 transitions. [2022-11-18 20:21:47,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:21:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 8713 transitions. [2022-11-18 20:21:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-18 20:21:47,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:47,256 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:47,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 20:21:47,257 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash -288985978, now seen corresponding path program 1 times [2022-11-18 20:21:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523134542] [2022-11-18 20:21:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:21:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:21:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:21:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:21:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:21:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:21:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:21:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:21:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:21:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:21:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:21:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:21:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-18 20:21:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:47,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523134542] [2022-11-18 20:21:47,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523134542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:47,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:47,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327501765] [2022-11-18 20:21:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:47,973 INFO L87 Difference]: Start difference. First operand 5316 states and 8713 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:21:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:57,450 INFO L93 Difference]: Finished difference Result 11743 states and 19526 transitions. [2022-11-18 20:21:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:21:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-11-18 20:21:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:57,488 INFO L225 Difference]: With dead ends: 11743 [2022-11-18 20:21:57,488 INFO L226 Difference]: Without dead ends: 6470 [2022-11-18 20:21:57,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:21:57,506 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1441 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:57,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1833 Invalid, 3392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [366 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-18 20:21:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-11-18 20:21:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5326. [2022-11-18 20:21:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 4137 states have (on average 1.591007976794779) internal successors, (6582), 4315 states have internal predecessors, (6582), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-11-18 20:21:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 8722 transitions. [2022-11-18 20:21:59,125 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 8722 transitions. Word has length 278 [2022-11-18 20:21:59,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:59,126 INFO L495 AbstractCegarLoop]: Abstraction has 5326 states and 8722 transitions. [2022-11-18 20:21:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:21:59,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 8722 transitions. [2022-11-18 20:21:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-18 20:21:59,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:59,137 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 20:21:59,138 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:21:59,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 689258454, now seen corresponding path program 1 times [2022-11-18 20:21:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:59,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365798284] [2022-11-18 20:21:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:21:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:21:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:21:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:21:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:21:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:21:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:21:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:21:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:21:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:21:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:21:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:21:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:21:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:21:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:21:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-18 20:21:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:59,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365798284] [2022-11-18 20:21:59,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365798284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:59,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:59,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:21:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172330866] [2022-11-18 20:21:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:21:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:21:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:21:59,833 INFO L87 Difference]: Start difference. First operand 5326 states and 8722 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:22:08,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:08,654 INFO L93 Difference]: Finished difference Result 11763 states and 19538 transitions. [2022-11-18 20:22:08,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:22:08,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-11-18 20:22:08,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:08,758 INFO L225 Difference]: With dead ends: 11763 [2022-11-18 20:22:08,759 INFO L226 Difference]: Without dead ends: 6480 [2022-11-18 20:22:08,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:22:08,774 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1470 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 1806 Invalid, 3264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 20:22:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2022-11-18 20:22:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 5338. [2022-11-18 20:22:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4149 states have (on average 1.589057604241986) internal successors, (6593), 4327 states have internal predecessors, (6593), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-11-18 20:22:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8733 transitions. [2022-11-18 20:22:10,464 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8733 transitions. Word has length 279 [2022-11-18 20:22:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:10,464 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8733 transitions. [2022-11-18 20:22:10,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:22:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8733 transitions. [2022-11-18 20:22:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-18 20:22:10,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:10,479 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 20:22:10,479 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1711866724, now seen corresponding path program 1 times [2022-11-18 20:22:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:10,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833227416] [2022-11-18 20:22:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:22:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:22:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:22:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:22:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:22:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:22:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:22:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:22:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:22:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:22:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:22:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:22:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-11-18 20:22:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:11,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833227416] [2022-11-18 20:22:11,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833227416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:11,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:11,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:22:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389858040] [2022-11-18 20:22:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:11,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:22:11,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:22:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:22:11,141 INFO L87 Difference]: Start difference. First operand 5338 states and 8733 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:22:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:20,708 INFO L93 Difference]: Finished difference Result 11359 states and 18934 transitions. [2022-11-18 20:22:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:22:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-11-18 20:22:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:20,735 INFO L225 Difference]: With dead ends: 11359 [2022-11-18 20:22:20,735 INFO L226 Difference]: Without dead ends: 6315 [2022-11-18 20:22:20,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:22:20,750 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1009 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:20,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1891 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [239 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:22:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-11-18 20:22:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 5258. [2022-11-18 20:22:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 4077 states have (on average 1.5938189845474613) internal successors, (6498), 4254 states have internal predecessors, (6498), 848 states have call successors, (848), 217 states have call predecessors, (848), 332 states have return successors, (1284), 844 states have call predecessors, (1284), 844 states have call successors, (1284) [2022-11-18 20:22:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8630 transitions. [2022-11-18 20:22:22,232 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8630 transitions. Word has length 279 [2022-11-18 20:22:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:22,233 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 8630 transitions. [2022-11-18 20:22:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-18 20:22:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8630 transitions. [2022-11-18 20:22:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-18 20:22:22,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:22,239 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:22,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 20:22:22,240 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1091726320, now seen corresponding path program 1 times [2022-11-18 20:22:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:22,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105513474] [2022-11-18 20:22:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:22:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:22:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:22:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:22:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:22:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:22:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:22:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:22:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:22:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:22:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:22:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:22:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:22:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-11-18 20:22:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:22,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105513474] [2022-11-18 20:22:22,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105513474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:22:22,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:22:22,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:22:22,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245402459] [2022-11-18 20:22:22,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:22:22,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:22:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:22:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:22:22,893 INFO L87 Difference]: Start difference. First operand 5258 states and 8630 transitions. Second operand has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-18 20:22:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:32,686 INFO L93 Difference]: Finished difference Result 8188 states and 13517 transitions. [2022-11-18 20:22:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:22:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 282 [2022-11-18 20:22:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:32,701 INFO L225 Difference]: With dead ends: 8188 [2022-11-18 20:22:32,701 INFO L226 Difference]: Without dead ends: 3023 [2022-11-18 20:22:32,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:22:32,717 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1405 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 5602 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 5602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:32,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 3058 Invalid, 5978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 5602 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-18 20:22:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-11-18 20:22:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2503. [2022-11-18 20:22:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1964 states have (on average 1.5941955193482689) internal successors, (3131), 2048 states have internal predecessors, (3131), 377 states have call successors, (377), 112 states have call predecessors, (377), 161 states have return successors, (550), 366 states have call predecessors, (550), 373 states have call successors, (550) [2022-11-18 20:22:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4058 transitions. [2022-11-18 20:22:33,537 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4058 transitions. Word has length 282 [2022-11-18 20:22:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:33,537 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4058 transitions. [2022-11-18 20:22:33,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-18 20:22:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4058 transitions. [2022-11-18 20:22:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-18 20:22:33,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:22:33,543 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:22:33,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 20:22:33,543 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:22:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:22:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 229083211, now seen corresponding path program 1 times [2022-11-18 20:22:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:22:33,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459583216] [2022-11-18 20:22:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:22:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:22:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:22:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:22:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:22:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:22:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:22:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:22:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:22:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 20:22:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:22:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:22:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:22:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:22:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:22:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:22:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:22:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:22:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-18 20:22:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:22:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459583216] [2022-11-18 20:22:34,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459583216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:22:34,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479162244] [2022-11-18 20:22:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:22:34,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:22:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:22:34,819 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:22:34,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 20:22:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:22:35,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:22:35,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:22:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-18 20:22:35,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-18 20:22:36,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479162244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:36,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:36,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 29 [2022-11-18 20:22:36,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462901968] [2022-11-18 20:22:36,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:36,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:22:36,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:22:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:22:36,807 INFO L87 Difference]: Start difference. First operand 2503 states and 4058 transitions. Second operand has 29 states, 29 states have (on average 11.655172413793103) internal successors, (338), 23 states have internal predecessors, (338), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-11-18 20:23:54,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:23:54,018 INFO L93 Difference]: Finished difference Result 14308 states and 25184 transitions. [2022-11-18 20:23:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-11-18 20:23:54,019 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.655172413793103) internal successors, (338), 23 states have internal predecessors, (338), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) Word has length 285 [2022-11-18 20:23:54,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:23:54,065 INFO L225 Difference]: With dead ends: 14308 [2022-11-18 20:23:54,066 INFO L226 Difference]: Without dead ends: 10985 [2022-11-18 20:23:54,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 713 SyntacticMatches, 5 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11479 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=4149, Invalid=25953, Unknown=0, NotChecked=0, Total=30102 [2022-11-18 20:23:54,097 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 20006 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 31087 mSolverCounterSat, 10017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20006 SdHoareTripleChecker+Valid, 8977 SdHoareTripleChecker+Invalid, 41104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 10017 IncrementalHoareTripleChecker+Valid, 31087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:23:54,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20006 Valid, 8977 Invalid, 41104 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [10017 Valid, 31087 Invalid, 0 Unknown, 0 Unchecked, 39.7s Time] [2022-11-18 20:23:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2022-11-18 20:23:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 8881. [2022-11-18 20:23:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8881 states, 6886 states have (on average 1.5515538774324718) internal successors, (10684), 7184 states have internal predecessors, (10684), 1380 states have call successors, (1380), 456 states have call predecessors, (1380), 614 states have return successors, (2235), 1336 states have call predecessors, (2235), 1376 states have call successors, (2235) [2022-11-18 20:23:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 14299 transitions. [2022-11-18 20:23:56,971 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 14299 transitions. Word has length 285 [2022-11-18 20:23:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:23:56,972 INFO L495 AbstractCegarLoop]: Abstraction has 8881 states and 14299 transitions. [2022-11-18 20:23:56,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.655172413793103) internal successors, (338), 23 states have internal predecessors, (338), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-11-18 20:23:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 14299 transitions. [2022-11-18 20:23:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-18 20:23:56,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:23:56,976 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:23:56,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:23:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-18 20:23:57,177 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:23:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:23:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -28578643, now seen corresponding path program 1 times [2022-11-18 20:23:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:23:57,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370065823] [2022-11-18 20:23:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:23:57,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:23:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:23:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:23:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:23:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:23:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:23:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:23:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:23:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:23:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:23:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:23:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:23:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:23:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:23:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:23:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:23:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:23:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:23:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 20:23:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:23:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:23:57,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:23:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370065823] [2022-11-18 20:23:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370065823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:23:57,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:23:57,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:23:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140019357] [2022-11-18 20:23:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:23:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:23:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:23:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:23:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:23:57,929 INFO L87 Difference]: Start difference. First operand 8881 states and 14299 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 20:24:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:09,985 INFO L93 Difference]: Finished difference Result 20538 states and 34497 transitions. [2022-11-18 20:24:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:24:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2022-11-18 20:24:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:10,039 INFO L225 Difference]: With dead ends: 20538 [2022-11-18 20:24:10,039 INFO L226 Difference]: Without dead ends: 11783 [2022-11-18 20:24:10,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:24:10,069 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1781 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 4535 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 4535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 2641 Invalid, 5091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 4535 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-18 20:24:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2022-11-18 20:24:12,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 8941. [2022-11-18 20:24:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5425531914893618) internal successors, (10730), 7223 states have internal predecessors, (10730), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-11-18 20:24:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14348 transitions. [2022-11-18 20:24:12,709 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14348 transitions. Word has length 238 [2022-11-18 20:24:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:12,710 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14348 transitions. [2022-11-18 20:24:12,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 20:24:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14348 transitions. [2022-11-18 20:24:12,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-18 20:24:12,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:12,717 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:12,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 20:24:12,717 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1303563419, now seen corresponding path program 1 times [2022-11-18 20:24:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895700005] [2022-11-18 20:24:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:24:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:24:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:24:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:24:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:24:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:24:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:24:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:24:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:24:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:24:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 20:24:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:24:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-18 20:24:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 20:24:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-18 20:24:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:13,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895700005] [2022-11-18 20:24:13,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895700005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:13,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:13,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:24:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99682673] [2022-11-18 20:24:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:24:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:24:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:24:13,635 INFO L87 Difference]: Start difference. First operand 8941 states and 14348 transitions. Second operand has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-18 20:24:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:24:26,053 INFO L93 Difference]: Finished difference Result 20193 states and 33695 transitions. [2022-11-18 20:24:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:24:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 245 [2022-11-18 20:24:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:24:26,094 INFO L225 Difference]: With dead ends: 20193 [2022-11-18 20:24:26,095 INFO L226 Difference]: Without dead ends: 10574 [2022-11-18 20:24:26,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:24:26,120 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 2040 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 4850 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 4850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:24:26,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 3038 Invalid, 5335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [485 Valid, 4850 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-18 20:24:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2022-11-18 20:24:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8941. [2022-11-18 20:24:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5278895917193789) internal successors, (10628), 7223 states have internal predecessors, (10628), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-11-18 20:24:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14246 transitions. [2022-11-18 20:24:28,805 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14246 transitions. Word has length 245 [2022-11-18 20:24:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:24:28,805 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14246 transitions. [2022-11-18 20:24:28,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-18 20:24:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14246 transitions. [2022-11-18 20:24:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-18 20:24:28,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:24:28,811 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:24:28,812 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:24:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1902906060, now seen corresponding path program 1 times [2022-11-18 20:24:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:28,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547125962] [2022-11-18 20:24:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:28,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:24:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:24:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:24:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:24:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:24:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:24:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:24:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:24:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:24:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:24:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:24:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:24:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:24:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:24:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:24:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:24:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 20:24:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-18 20:24:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-18 20:24:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-18 20:24:29,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:29,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547125962] [2022-11-18 20:24:29,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547125962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:29,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863247045] [2022-11-18 20:24:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:29,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:29,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:29,835 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:24:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:30,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:24:30,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 20:24:30,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-18 20:24:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863247045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:31,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:31,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2022-11-18 20:24:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916926247] [2022-11-18 20:24:31,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:31,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:24:31,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:24:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:24:31,332 INFO L87 Difference]: Start difference. First operand 8941 states and 14246 transitions. Second operand has 25 states, 25 states have (on average 12.2) internal successors, (305), 18 states have internal predecessors, (305), 9 states have call successors, (60), 8 states have call predecessors, (60), 14 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2022-11-18 20:25:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:32,882 INFO L93 Difference]: Finished difference Result 49786 states and 94613 transitions. [2022-11-18 20:25:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-18 20:25:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.2) internal successors, (305), 18 states have internal predecessors, (305), 9 states have call successors, (60), 8 states have call predecessors, (60), 14 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) Word has length 250 [2022-11-18 20:25:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:33,363 INFO L225 Difference]: With dead ends: 49786 [2022-11-18 20:25:33,363 INFO L226 Difference]: Without dead ends: 40987 [2022-11-18 20:25:33,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 552 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3710 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1770, Invalid=10002, Unknown=0, NotChecked=0, Total=11772 [2022-11-18 20:25:33,441 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 14532 mSDsluCounter, 8018 mSDsCounter, 0 mSdLazyCounter, 23040 mSolverCounterSat, 8884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14543 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 31924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 8884 IncrementalHoareTripleChecker+Valid, 23040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:33,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14543 Valid, 9274 Invalid, 31924 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [8884 Valid, 23040 Invalid, 0 Unknown, 0 Unchecked, 32.1s Time] [2022-11-18 20:25:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40987 states. [2022-11-18 20:25:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40987 to 29203. [2022-11-18 20:25:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29203 states, 22445 states have (on average 1.5222543996435731) internal successors, (34167), 23309 states have internal predecessors, (34167), 4803 states have call successors, (4803), 1356 states have call predecessors, (4803), 1954 states have return successors, (8677), 4905 states have call predecessors, (8677), 4799 states have call successors, (8677) [2022-11-18 20:25:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29203 states to 29203 states and 47647 transitions. [2022-11-18 20:25:43,274 INFO L78 Accepts]: Start accepts. Automaton has 29203 states and 47647 transitions. Word has length 250 [2022-11-18 20:25:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:25:43,274 INFO L495 AbstractCegarLoop]: Abstraction has 29203 states and 47647 transitions. [2022-11-18 20:25:43,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.2) internal successors, (305), 18 states have internal predecessors, (305), 9 states have call successors, (60), 8 states have call predecessors, (60), 14 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2022-11-18 20:25:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 29203 states and 47647 transitions. [2022-11-18 20:25:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-18 20:25:43,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:25:43,291 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:43,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 20:25:43,499 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:25:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash 280833199, now seen corresponding path program 1 times [2022-11-18 20:25:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563212141] [2022-11-18 20:25:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:25:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:25:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:25:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:25:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:25:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:25:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:25:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:25:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:25:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:25:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:25:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:25:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:25:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:25:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:25:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:25:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:25:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:25:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:25:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:25:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:25:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:25:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:25:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:25:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:25:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-18 20:25:44,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563212141] [2022-11-18 20:25:44,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563212141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955019440] [2022-11-18 20:25:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:44,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:44,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:44,587 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63bca835-f1c8-4cdf-989c-4e95b09f8611/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:25:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:45,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:25:45,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:25:45,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:45,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955019440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:45,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:45,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-11-18 20:25:45,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375913795] [2022-11-18 20:25:45,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:25:45,089 INFO L87 Difference]: Start difference. First operand 29203 states and 47647 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 20:25:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:25:55,906 INFO L93 Difference]: Finished difference Result 59098 states and 97182 transitions. [2022-11-18 20:25:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 320 [2022-11-18 20:25:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:25:56,056 INFO L225 Difference]: With dead ends: 59098 [2022-11-18 20:25:56,056 INFO L226 Difference]: Without dead ends: 30139 [2022-11-18 20:25:56,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:25:56,170 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 213 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:25:56,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2304 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:25:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30139 states.