./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN --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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- 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-6b4ec56 [2022-11-20 10:55:56,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:56,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:56,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:56,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:56,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:56,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:56,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:56,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:56,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:56,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:56,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:56,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:56,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:56,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:56,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:56,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:56,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:56,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:56,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:56,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:56,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:56,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:56,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:56,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:56,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:56,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:56,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:56,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:56,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:56,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:56,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:56,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:56,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:56,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:56,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:56,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:56,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:56,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:56,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:56,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:56,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:55:56,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:56,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:56,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:56,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:56,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:56,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:56,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:56,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:56,154 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:56,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:56,154 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:55:56,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:56,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:55:56,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:56,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:55:56,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:56,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:55:56,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:55:56,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:55:56,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:56,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:55:56,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:56,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:56,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:56,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:56,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:56,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:56,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:55:56,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:56,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:56,160 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:55:56,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:55:56,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:55:56,161 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_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2022-11-20 10:55:56,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:55:56,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:55:56,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:55:56,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:55:56,596 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:55:56,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-11-20 10:55:59,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:55:59,893 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:55:59,893 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-11-20 10:55:59,915 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/data/36df71b68/bde9331c14bf46988e759b3de8dc745c/FLAG0e1537117 [2022-11-20 10:55:59,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/data/36df71b68/bde9331c14bf46988e759b3de8dc745c [2022-11-20 10:55:59,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:55:59,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:55:59,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:59,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:55:59,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:55:59,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:59" (1/1) ... [2022-11-20 10:55:59,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d70276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:59, skipping insertion in model container [2022-11-20 10:55:59,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:59" (1/1) ... [2022-11-20 10:55:59,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:56:00,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:56:00,246 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-11-20 10:56:00,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:00,261 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:56:00,326 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-11-20 10:56:00,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:00,343 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:56:00,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00 WrapperNode [2022-11-20 10:56:00,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:00,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:00,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:56:00,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:56:00,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,417 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 480 [2022-11-20 10:56:00,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:00,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:56:00,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:56:00,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:56:00,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:56:00,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:56:00,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:56:00,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:56:00,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (1/1) ... [2022-11-20 10:56:00,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:00,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:56:00,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:56:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-11-20 10:56:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-11-20 10:56:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:56:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-11-20 10:56:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-11-20 10:56:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 10:56:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 10:56:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:56:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:56:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:56:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-11-20 10:56:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-11-20 10:56:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:56:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:56:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-11-20 10:56:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-11-20 10:56:00,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:56:00,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:56:01,314 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:56:01,327 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:56:01,327 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:56:01,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:01 BoogieIcfgContainer [2022-11-20 10:56:01,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:56:01,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:56:01,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:56:01,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:56:01,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:59" (1/3) ... [2022-11-20 10:56:01,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c7022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:01, skipping insertion in model container [2022-11-20 10:56:01,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:00" (2/3) ... [2022-11-20 10:56:01,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c7022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:01, skipping insertion in model container [2022-11-20 10:56:01,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:01" (3/3) ... [2022-11-20 10:56:01,345 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-11-20 10:56:01,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:56:01,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:56:01,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:01,453 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;@7345a72f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:01,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:56:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 10:56:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:56:01,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:01,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:01,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1815111432, now seen corresponding path program 1 times [2022-11-20 10:56:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:01,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050644095] [2022-11-20 10:56:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:01,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:56:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:01,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:01,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050644095] [2022-11-20 10:56:01,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050644095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:01,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:01,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:56:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250316346] [2022-11-20 10:56:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:01,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:56:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:56:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:56:01,893 INFO L87 Difference]: Start difference. First operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:01,951 INFO L93 Difference]: Finished difference Result 326 states and 539 transitions. [2022-11-20 10:56:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:56:01,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 10:56:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:01,962 INFO L225 Difference]: With dead ends: 326 [2022-11-20 10:56:01,962 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 10:56:01,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:56:01,970 INFO L413 NwaCegarLoop]: 264 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, 264 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 [2022-11-20 10:56:01,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 10:56:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 10:56:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.5488721804511278) internal successors, (206), 134 states have internal predecessors, (206), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 10:56:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2022-11-20 10:56:02,027 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 28 [2022-11-20 10:56:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:02,028 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2022-11-20 10:56:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2022-11-20 10:56:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:56:02,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:02,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:02,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:56:02,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256714, now seen corresponding path program 1 times [2022-11-20 10:56:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:02,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657057212] [2022-11-20 10:56:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:02,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:56:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:02,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657057212] [2022-11-20 10:56:02,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657057212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:02,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:02,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:56:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308978508] [2022-11-20 10:56:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:56:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:56:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:56:02,313 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:02,462 INFO L93 Difference]: Finished difference Result 324 states and 502 transitions. [2022-11-20 10:56:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:56:02,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-20 10:56:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:02,465 INFO L225 Difference]: With dead ends: 324 [2022-11-20 10:56:02,465 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 10:56:02,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:02,468 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 137 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:02,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1117 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 10:56:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-20 10:56:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.4586466165413534) internal successors, (194), 134 states have internal predecessors, (194), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 10:56:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2022-11-20 10:56:02,489 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 28 [2022-11-20 10:56:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:02,489 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2022-11-20 10:56:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2022-11-20 10:56:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:56:02,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:02,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:02,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:56:02,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash 187133938, now seen corresponding path program 1 times [2022-11-20 10:56:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:02,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558653273] [2022-11-20 10:56:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558653273] [2022-11-20 10:56:02,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558653273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:02,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:02,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478055940] [2022-11-20 10:56:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:02,748 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:02,856 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2022-11-20 10:56:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-11-20 10:56:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:02,863 INFO L225 Difference]: With dead ends: 325 [2022-11-20 10:56:02,863 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 10:56:02,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:02,867 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:02,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 10:56:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-20 10:56:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-20 10:56:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 255 transitions. [2022-11-20 10:56:02,898 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 255 transitions. Word has length 39 [2022-11-20 10:56:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:02,898 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 255 transitions. [2022-11-20 10:56:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 255 transitions. [2022-11-20 10:56:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:56:02,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:02,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:56:02,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1556220768, now seen corresponding path program 1 times [2022-11-20 10:56:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:02,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141963440] [2022-11-20 10:56:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:56:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:03,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141963440] [2022-11-20 10:56:03,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141963440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:03,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:03,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676172011] [2022-11-20 10:56:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:03,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:03,082 INFO L87 Difference]: Start difference. First operand 173 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:03,197 INFO L93 Difference]: Finished difference Result 476 states and 713 transitions. [2022-11-20 10:56:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:03,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-20 10:56:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:03,201 INFO L225 Difference]: With dead ends: 476 [2022-11-20 10:56:03,202 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 10:56:03,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:03,216 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 208 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:03,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 10:56:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2022-11-20 10:56:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 245 states have internal predecessors, (357), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-20 10:56:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2022-11-20 10:56:03,298 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 55 [2022-11-20 10:56:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:03,299 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2022-11-20 10:56:03,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2022-11-20 10:56:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:56:03,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:03,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:56:03,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1976715472, now seen corresponding path program 1 times [2022-11-20 10:56:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045005427] [2022-11-20 10:56:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:56:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045005427] [2022-11-20 10:56:03,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045005427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:03,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:03,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106749375] [2022-11-20 10:56:03,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:03,424 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:03,505 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2022-11-20 10:56:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:03,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-20 10:56:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:03,517 INFO L225 Difference]: With dead ends: 887 [2022-11-20 10:56:03,517 INFO L226 Difference]: Without dead ends: 589 [2022-11-20 10:56:03,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:03,524 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:03,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-20 10:56:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 574. [2022-11-20 10:56:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 432 states have (on average 1.474537037037037) internal successors, (637), 436 states have internal predecessors, (637), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-20 10:56:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 863 transitions. [2022-11-20 10:56:03,603 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 863 transitions. Word has length 56 [2022-11-20 10:56:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:03,604 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 863 transitions. [2022-11-20 10:56:03,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 863 transitions. [2022-11-20 10:56:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:56:03,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:03,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:03,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:56:03,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:03,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1038388146, now seen corresponding path program 1 times [2022-11-20 10:56:03,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:03,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656930175] [2022-11-20 10:56:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:03,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 10:56:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:03,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656930175] [2022-11-20 10:56:03,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656930175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:03,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:03,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863133915] [2022-11-20 10:56:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:03,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:03,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:03,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:03,769 INFO L87 Difference]: Start difference. First operand 574 states and 863 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:04,189 INFO L93 Difference]: Finished difference Result 1559 states and 2395 transitions. [2022-11-20 10:56:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:56:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-20 10:56:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:04,199 INFO L225 Difference]: With dead ends: 1559 [2022-11-20 10:56:04,199 INFO L226 Difference]: Without dead ends: 1002 [2022-11-20 10:56:04,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:04,202 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 612 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:04,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 656 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:56:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-11-20 10:56:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 651. [2022-11-20 10:56:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 501 states have (on average 1.4610778443113772) internal successors, (732), 504 states have internal predecessors, (732), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 966 transitions. [2022-11-20 10:56:04,301 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 966 transitions. Word has length 56 [2022-11-20 10:56:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:04,301 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 966 transitions. [2022-11-20 10:56:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 966 transitions. [2022-11-20 10:56:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:56:04,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:04,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:56:04,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779263, now seen corresponding path program 1 times [2022-11-20 10:56:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577903156] [2022-11-20 10:56:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 10:56:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:04,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577903156] [2022-11-20 10:56:04,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577903156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:04,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:04,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086649707] [2022-11-20 10:56:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:04,436 INFO L87 Difference]: Start difference. First operand 651 states and 966 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:04,855 INFO L93 Difference]: Finished difference Result 1563 states and 2395 transitions. [2022-11-20 10:56:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:56:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-20 10:56:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:04,863 INFO L225 Difference]: With dead ends: 1563 [2022-11-20 10:56:04,864 INFO L226 Difference]: Without dead ends: 1006 [2022-11-20 10:56:04,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:04,867 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 609 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:04,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 658 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:56:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-20 10:56:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 659. [2022-11-20 10:56:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4538310412573674) internal successors, (740), 512 states have internal predecessors, (740), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 974 transitions. [2022-11-20 10:56:04,968 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 974 transitions. Word has length 57 [2022-11-20 10:56:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:04,970 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 974 transitions. [2022-11-20 10:56:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 974 transitions. [2022-11-20 10:56:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 10:56:04,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:04,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:56:04,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:04,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 496428017, now seen corresponding path program 1 times [2022-11-20 10:56:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:04,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779414815] [2022-11-20 10:56:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:56:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:05,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:05,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779414815] [2022-11-20 10:56:05,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779414815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:05,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:05,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886041380] [2022-11-20 10:56:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:05,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:05,136 INFO L87 Difference]: Start difference. First operand 659 states and 974 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:05,540 INFO L93 Difference]: Finished difference Result 1563 states and 2387 transitions. [2022-11-20 10:56:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:05,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2022-11-20 10:56:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:05,547 INFO L225 Difference]: With dead ends: 1563 [2022-11-20 10:56:05,547 INFO L226 Difference]: Without dead ends: 1006 [2022-11-20 10:56:05,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:05,550 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 177 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:05,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 631 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:56:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-11-20 10:56:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 659. [2022-11-20 10:56:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4459724950884087) internal successors, (736), 512 states have internal predecessors, (736), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 970 transitions. [2022-11-20 10:56:05,641 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 970 transitions. Word has length 59 [2022-11-20 10:56:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:05,641 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 970 transitions. [2022-11-20 10:56:05,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 10:56:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 970 transitions. [2022-11-20 10:56:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:56:05,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:05,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:05,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:56:05,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash -906823040, now seen corresponding path program 1 times [2022-11-20 10:56:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:05,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991309713] [2022-11-20 10:56:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:05,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:05,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991309713] [2022-11-20 10:56:05,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991309713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:05,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:05,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033991269] [2022-11-20 10:56:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:05,897 INFO L87 Difference]: Start difference. First operand 659 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 10:56:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:06,019 INFO L93 Difference]: Finished difference Result 1236 states and 1843 transitions. [2022-11-20 10:56:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2022-11-20 10:56:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:06,024 INFO L225 Difference]: With dead ends: 1236 [2022-11-20 10:56:06,024 INFO L226 Difference]: Without dead ends: 679 [2022-11-20 10:56:06,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:06,034 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 6 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:06,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-20 10:56:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-11-20 10:56:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.4323809523809523) internal successors, (752), 528 states have internal predecessors, (752), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 986 transitions. [2022-11-20 10:56:06,117 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 986 transitions. Word has length 60 [2022-11-20 10:56:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:06,119 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 986 transitions. [2022-11-20 10:56:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 10:56:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 986 transitions. [2022-11-20 10:56:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:56:06,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:06,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:06,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:56:06,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1438142618, now seen corresponding path program 1 times [2022-11-20 10:56:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:06,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739877600] [2022-11-20 10:56:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:06,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739877600] [2022-11-20 10:56:06,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739877600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:06,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:06,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273738969] [2022-11-20 10:56:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:06,343 INFO L87 Difference]: Start difference. First operand 679 states and 986 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 10:56:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:06,468 INFO L93 Difference]: Finished difference Result 1276 states and 1887 transitions. [2022-11-20 10:56:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:06,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2022-11-20 10:56:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:06,472 INFO L225 Difference]: With dead ends: 1276 [2022-11-20 10:56:06,473 INFO L226 Difference]: Without dead ends: 699 [2022-11-20 10:56:06,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:06,475 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:06,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-20 10:56:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-11-20 10:56:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 541 states have (on average 1.4195933456561922) internal successors, (768), 544 states have internal predecessors, (768), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1002 transitions. [2022-11-20 10:56:06,557 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1002 transitions. Word has length 68 [2022-11-20 10:56:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:06,558 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1002 transitions. [2022-11-20 10:56:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 10:56:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1002 transitions. [2022-11-20 10:56:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:56:06,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:06,560 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:06,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:56:06,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash 288384240, now seen corresponding path program 1 times [2022-11-20 10:56:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:06,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622119181] [2022-11-20 10:56:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:06,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622119181] [2022-11-20 10:56:06,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622119181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:06,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:06,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:06,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397335631] [2022-11-20 10:56:06,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:06,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:06,721 INFO L87 Difference]: Start difference. First operand 699 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:56:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:06,846 INFO L93 Difference]: Finished difference Result 1312 states and 1903 transitions. [2022-11-20 10:56:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-20 10:56:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:06,852 INFO L225 Difference]: With dead ends: 1312 [2022-11-20 10:56:06,852 INFO L226 Difference]: Without dead ends: 715 [2022-11-20 10:56:06,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:06,855 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:06,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-20 10:56:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2022-11-20 10:56:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 553 states have (on average 1.410488245931284) internal successors, (780), 556 states have internal predecessors, (780), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1014 transitions. [2022-11-20 10:56:06,930 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1014 transitions. Word has length 76 [2022-11-20 10:56:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:06,931 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1014 transitions. [2022-11-20 10:56:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:56:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1014 transitions. [2022-11-20 10:56:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:56:06,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:06,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:06,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:56:06,933 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1610123753, now seen corresponding path program 1 times [2022-11-20 10:56:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587965537] [2022-11-20 10:56:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:56:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:07,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587965537] [2022-11-20 10:56:07,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587965537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:07,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:07,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814507825] [2022-11-20 10:56:07,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:07,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:07,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:07,123 INFO L87 Difference]: Start difference. First operand 715 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:56:07,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:07,241 INFO L93 Difference]: Finished difference Result 1348 states and 1943 transitions. [2022-11-20 10:56:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:07,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-20 10:56:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:07,245 INFO L225 Difference]: With dead ends: 1348 [2022-11-20 10:56:07,245 INFO L226 Difference]: Without dead ends: 735 [2022-11-20 10:56:07,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:07,248 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:07,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-11-20 10:56:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2022-11-20 10:56:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 569 states have (on average 1.398945518453427) internal successors, (796), 572 states have internal predecessors, (796), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2022-11-20 10:56:07,324 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 76 [2022-11-20 10:56:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:07,325 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2022-11-20 10:56:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-20 10:56:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2022-11-20 10:56:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 10:56:07,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:07,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:56:07,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1718962299, now seen corresponding path program 1 times [2022-11-20 10:56:07,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818864670] [2022-11-20 10:56:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:56:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818864670] [2022-11-20 10:56:07,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818864670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:07,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:07,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:07,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990160210] [2022-11-20 10:56:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:07,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:07,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:07,562 INFO L87 Difference]: Start difference. First operand 735 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:56:07,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:07,671 INFO L93 Difference]: Finished difference Result 1392 states and 1971 transitions. [2022-11-20 10:56:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:07,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-11-20 10:56:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:07,675 INFO L225 Difference]: With dead ends: 1392 [2022-11-20 10:56:07,675 INFO L226 Difference]: Without dead ends: 759 [2022-11-20 10:56:07,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:07,678 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 7 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:07,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 737 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-11-20 10:56:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2022-11-20 10:56:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 589 states have (on average 1.3853989813242784) internal successors, (816), 592 states have internal predecessors, (816), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-20 10:56:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1050 transitions. [2022-11-20 10:56:07,757 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1050 transitions. Word has length 84 [2022-11-20 10:56:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:07,758 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1050 transitions. [2022-11-20 10:56:07,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 10:56:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1050 transitions. [2022-11-20 10:56:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:56:07,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:07,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:07,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:56:07,761 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 966027762, now seen corresponding path program 1 times [2022-11-20 10:56:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:07,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299359808] [2022-11-20 10:56:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:07,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:56:08,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:08,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299359808] [2022-11-20 10:56:08,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299359808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:08,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:08,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:08,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863256330] [2022-11-20 10:56:08,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:08,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:08,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:08,048 INFO L87 Difference]: Start difference. First operand 759 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:56:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:08,493 INFO L93 Difference]: Finished difference Result 2227 states and 3125 transitions. [2022-11-20 10:56:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:56:08,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2022-11-20 10:56:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:08,502 INFO L225 Difference]: With dead ends: 2227 [2022-11-20 10:56:08,502 INFO L226 Difference]: Without dead ends: 1570 [2022-11-20 10:56:08,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:56:08,505 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 315 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:08,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1853 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:56:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-11-20 10:56:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 912. [2022-11-20 10:56:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 705 states have (on average 1.374468085106383) internal successors, (969), 709 states have internal predecessors, (969), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-20 10:56:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1251 transitions. [2022-11-20 10:56:08,654 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1251 transitions. Word has length 87 [2022-11-20 10:56:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:08,655 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1251 transitions. [2022-11-20 10:56:08,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:56:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1251 transitions. [2022-11-20 10:56:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 10:56:08,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:08,657 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:56:08,657 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2026376801, now seen corresponding path program 1 times [2022-11-20 10:56:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:08,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335578349] [2022-11-20 10:56:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:56:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:56:08,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335578349] [2022-11-20 10:56:08,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335578349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:08,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:08,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:08,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265446510] [2022-11-20 10:56:08,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:08,829 INFO L87 Difference]: Start difference. First operand 912 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:56:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:08,968 INFO L93 Difference]: Finished difference Result 1697 states and 2351 transitions. [2022-11-20 10:56:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2022-11-20 10:56:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:08,973 INFO L225 Difference]: With dead ends: 1697 [2022-11-20 10:56:08,973 INFO L226 Difference]: Without dead ends: 932 [2022-11-20 10:56:08,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:08,976 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:08,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-20 10:56:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2022-11-20 10:56:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 724 states have internal predecessors, (984), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-20 10:56:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1266 transitions. [2022-11-20 10:56:09,116 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1266 transitions. Word has length 91 [2022-11-20 10:56:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1266 transitions. [2022-11-20 10:56:09,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:56:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1266 transitions. [2022-11-20 10:56:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 10:56:09,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:09,118 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:56:09,119 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1456343440, now seen corresponding path program 1 times [2022-11-20 10:56:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:09,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638279248] [2022-11-20 10:56:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:56:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:09,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638279248] [2022-11-20 10:56:09,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638279248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:09,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:09,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:56:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242295272] [2022-11-20 10:56:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:09,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:56:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:56:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:56:09,352 INFO L87 Difference]: Start difference. First operand 932 states and 1266 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:56:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:09,644 INFO L93 Difference]: Finished difference Result 1343 states and 1926 transitions. [2022-11-20 10:56:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:56:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2022-11-20 10:56:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:09,651 INFO L225 Difference]: With dead ends: 1343 [2022-11-20 10:56:09,651 INFO L226 Difference]: Without dead ends: 1341 [2022-11-20 10:56:09,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:09,652 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 193 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:09,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1918 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-20 10:56:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 934. [2022-11-20 10:56:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 725 states have internal predecessors, (984), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2022-11-20 10:56:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1268 transitions. [2022-11-20 10:56:09,792 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1268 transitions. Word has length 90 [2022-11-20 10:56:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:09,793 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1268 transitions. [2022-11-20 10:56:09,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:56:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1268 transitions. [2022-11-20 10:56:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:56:09,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:09,795 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:09,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:56:09,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash 914249721, now seen corresponding path program 1 times [2022-11-20 10:56:09,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:09,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871684135] [2022-11-20 10:56:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:09,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:56:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:09,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871684135] [2022-11-20 10:56:09,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871684135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:09,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:09,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075494889] [2022-11-20 10:56:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:09,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:09,980 INFO L87 Difference]: Start difference. First operand 934 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:56:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:10,353 INFO L93 Difference]: Finished difference Result 1905 states and 2647 transitions. [2022-11-20 10:56:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:56:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2022-11-20 10:56:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:10,359 INFO L225 Difference]: With dead ends: 1905 [2022-11-20 10:56:10,360 INFO L226 Difference]: Without dead ends: 1159 [2022-11-20 10:56:10,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:56:10,362 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 350 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:10,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1804 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-20 10:56:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 952. [2022-11-20 10:56:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 752 states have internal predecessors, (1012), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2022-11-20 10:56:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1284 transitions. [2022-11-20 10:56:10,539 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1284 transitions. Word has length 93 [2022-11-20 10:56:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:10,539 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1284 transitions. [2022-11-20 10:56:10,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 10:56:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1284 transitions. [2022-11-20 10:56:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 10:56:10,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:10,541 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:56:10,541 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206136, now seen corresponding path program 1 times [2022-11-20 10:56:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:10,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212627808] [2022-11-20 10:56:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:56:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:56:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:10,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212627808] [2022-11-20 10:56:10,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212627808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:10,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:10,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887719122] [2022-11-20 10:56:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:10,863 INFO L87 Difference]: Start difference. First operand 952 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:56:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:11,240 INFO L93 Difference]: Finished difference Result 1956 states and 2712 transitions. [2022-11-20 10:56:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:56:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-20 10:56:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:11,247 INFO L225 Difference]: With dead ends: 1956 [2022-11-20 10:56:11,247 INFO L226 Difference]: Without dead ends: 1182 [2022-11-20 10:56:11,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:56:11,249 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 257 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:11,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1956 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-11-20 10:56:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 941. [2022-11-20 10:56:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 735 states have (on average 1.3605442176870748) internal successors, (1000), 744 states have internal predecessors, (1000), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-20 10:56:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1268 transitions. [2022-11-20 10:56:11,409 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1268 transitions. Word has length 95 [2022-11-20 10:56:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:11,410 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1268 transitions. [2022-11-20 10:56:11,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:56:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1268 transitions. [2022-11-20 10:56:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 10:56:11,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:11,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:56:11,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1630829129, now seen corresponding path program 1 times [2022-11-20 10:56:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:11,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573986185] [2022-11-20 10:56:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:56:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 10:56:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:56:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:11,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573986185] [2022-11-20 10:56:11,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573986185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:11,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:11,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:56:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331932761] [2022-11-20 10:56:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:11,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:56:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:56:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:56:11,788 INFO L87 Difference]: Start difference. First operand 941 states and 1268 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:56:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:12,766 INFO L93 Difference]: Finished difference Result 2160 states and 2992 transitions. [2022-11-20 10:56:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 96 [2022-11-20 10:56:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:12,773 INFO L225 Difference]: With dead ends: 2160 [2022-11-20 10:56:12,773 INFO L226 Difference]: Without dead ends: 1366 [2022-11-20 10:56:12,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:12,776 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 773 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:12,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2007 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:56:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-20 10:56:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 957. [2022-11-20 10:56:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 743 states have (on average 1.3364737550471064) internal successors, (993), 753 states have internal predecessors, (993), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2022-11-20 10:56:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1267 transitions. [2022-11-20 10:56:12,964 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1267 transitions. Word has length 96 [2022-11-20 10:56:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:12,964 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1267 transitions. [2022-11-20 10:56:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:56:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1267 transitions. [2022-11-20 10:56:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 10:56:12,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:12,966 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:56:12,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1901259188, now seen corresponding path program 1 times [2022-11-20 10:56:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441740472] [2022-11-20 10:56:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:56:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:56:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:56:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:56:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:13,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441740472] [2022-11-20 10:56:13,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441740472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:13,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:13,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478133100] [2022-11-20 10:56:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:13,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:13,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:13,109 INFO L87 Difference]: Start difference. First operand 957 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:13,613 INFO L93 Difference]: Finished difference Result 2707 states and 3655 transitions. [2022-11-20 10:56:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-11-20 10:56:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:13,622 INFO L225 Difference]: With dead ends: 2707 [2022-11-20 10:56:13,623 INFO L226 Difference]: Without dead ends: 1948 [2022-11-20 10:56:13,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:13,626 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 367 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:13,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1051 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-11-20 10:56:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1538. [2022-11-20 10:56:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1181 states have (on average 1.3302286198137172) internal successors, (1571), 1197 states have internal predecessors, (1571), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 10:56:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2033 transitions. [2022-11-20 10:56:13,927 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2033 transitions. Word has length 97 [2022-11-20 10:56:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:13,927 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 2033 transitions. [2022-11-20 10:56:13,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2033 transitions. [2022-11-20 10:56:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 10:56:13,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:13,929 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:13,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:56:13,930 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash -985041855, now seen corresponding path program 1 times [2022-11-20 10:56:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:13,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245637933] [2022-11-20 10:56:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:13,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:56:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:56:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:56:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:56:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:56:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245637933] [2022-11-20 10:56:14,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245637933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:14,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147919566] [2022-11-20 10:56:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:14,281 INFO L87 Difference]: Start difference. First operand 1538 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:15,470 INFO L93 Difference]: Finished difference Result 3598 states and 4875 transitions. [2022-11-20 10:56:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-20 10:56:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:15,480 INFO L225 Difference]: With dead ends: 3598 [2022-11-20 10:56:15,481 INFO L226 Difference]: Without dead ends: 2336 [2022-11-20 10:56:15,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:15,484 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 676 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:15,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1870 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:56:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-11-20 10:56:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1563. [2022-11-20 10:56:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1193 states have (on average 1.3235540653813915) internal successors, (1579), 1210 states have internal predecessors, (1579), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-11-20 10:56:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2057 transitions. [2022-11-20 10:56:15,841 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2057 transitions. Word has length 99 [2022-11-20 10:56:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:15,842 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2057 transitions. [2022-11-20 10:56:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2057 transitions. [2022-11-20 10:56:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:56:15,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:15,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:15,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:56:15,845 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash -8868659, now seen corresponding path program 1 times [2022-11-20 10:56:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949208554] [2022-11-20 10:56:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:15,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:56:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 10:56:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:56:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:56:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 10:56:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:56:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:56:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:15,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949208554] [2022-11-20 10:56:15,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949208554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:15,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:15,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583072016] [2022-11-20 10:56:15,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:15,988 INFO L87 Difference]: Start difference. First operand 1563 states and 2057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:16,664 INFO L93 Difference]: Finished difference Result 3994 states and 5308 transitions. [2022-11-20 10:56:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:16,665 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 10:56:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:16,676 INFO L225 Difference]: With dead ends: 3994 [2022-11-20 10:56:16,676 INFO L226 Difference]: Without dead ends: 2748 [2022-11-20 10:56:16,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:16,680 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 383 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:16,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1102 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2022-11-20 10:56:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2452. [2022-11-20 10:56:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1845 states have (on average 1.313821138211382) internal successors, (2424), 1872 states have internal predecessors, (2424), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-11-20 10:56:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3212 transitions. [2022-11-20 10:56:17,220 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3212 transitions. Word has length 101 [2022-11-20 10:56:17,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:17,221 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3212 transitions. [2022-11-20 10:56:17,221 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3212 transitions. [2022-11-20 10:56:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:56:17,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:17,224 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:56:17,224 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -151110586, now seen corresponding path program 1 times [2022-11-20 10:56:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:17,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758750224] [2022-11-20 10:56:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:56:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:56:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:56:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 10:56:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:56:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 10:56:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758750224] [2022-11-20 10:56:17,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758750224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:17,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:17,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581289634] [2022-11-20 10:56:17,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:17,295 INFO L87 Difference]: Start difference. First operand 2452 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:18,135 INFO L93 Difference]: Finished difference Result 5878 states and 8060 transitions. [2022-11-20 10:56:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:18,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 10:56:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:18,183 INFO L225 Difference]: With dead ends: 5878 [2022-11-20 10:56:18,183 INFO L226 Difference]: Without dead ends: 3634 [2022-11-20 10:56:18,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:18,189 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 123 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:18,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 614 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-11-20 10:56:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2455. [2022-11-20 10:56:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1848 states have (on average 1.3133116883116882) internal successors, (2427), 1875 states have internal predecessors, (2427), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-11-20 10:56:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3215 transitions. [2022-11-20 10:56:18,717 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3215 transitions. Word has length 101 [2022-11-20 10:56:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:18,717 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3215 transitions. [2022-11-20 10:56:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3215 transitions. [2022-11-20 10:56:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 10:56:18,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:18,721 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:18,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:56:18,722 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash -341042115, now seen corresponding path program 1 times [2022-11-20 10:56:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:18,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164746385] [2022-11-20 10:56:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:56:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:56:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:56:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 10:56:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:56:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 10:56:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:18,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164746385] [2022-11-20 10:56:18,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164746385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:18,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:18,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93575586] [2022-11-20 10:56:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:18,912 INFO L87 Difference]: Start difference. First operand 2455 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:19,965 INFO L93 Difference]: Finished difference Result 5913 states and 7804 transitions. [2022-11-20 10:56:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:19,965 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-20 10:56:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:19,990 INFO L225 Difference]: With dead ends: 5913 [2022-11-20 10:56:19,990 INFO L226 Difference]: Without dead ends: 3896 [2022-11-20 10:56:19,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:19,996 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 368 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1087 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2022-11-20 10:56:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3376. [2022-11-20 10:56:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2530 states have (on average 1.3094861660079051) internal successors, (3313), 2567 states have internal predecessors, (3313), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-11-20 10:56:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4415 transitions. [2022-11-20 10:56:20,648 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4415 transitions. Word has length 101 [2022-11-20 10:56:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:20,649 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4415 transitions. [2022-11-20 10:56:20,649 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4415 transitions. [2022-11-20 10:56:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 10:56:20,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:20,652 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:56:20,653 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1342850110, now seen corresponding path program 1 times [2022-11-20 10:56:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:20,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040577404] [2022-11-20 10:56:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:56:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:56:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:56:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:56:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:56:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:56:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:20,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040577404] [2022-11-20 10:56:20,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040577404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:20,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:20,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:20,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856703965] [2022-11-20 10:56:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:20,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:20,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:20,857 INFO L87 Difference]: Start difference. First operand 3376 states and 4415 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:21,838 INFO L93 Difference]: Finished difference Result 7048 states and 9438 transitions. [2022-11-20 10:56:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:21,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-20 10:56:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:21,858 INFO L225 Difference]: With dead ends: 7048 [2022-11-20 10:56:21,858 INFO L226 Difference]: Without dead ends: 3744 [2022-11-20 10:56:21,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:21,868 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 262 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:21,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 766 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2022-11-20 10:56:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2995. [2022-11-20 10:56:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2226 states have (on average 1.3144654088050314) internal successors, (2926), 2250 states have internal predecessors, (2926), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-11-20 10:56:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3930 transitions. [2022-11-20 10:56:22,636 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3930 transitions. Word has length 102 [2022-11-20 10:56:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:22,636 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 3930 transitions. [2022-11-20 10:56:22,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3930 transitions. [2022-11-20 10:56:22,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:56:22,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:22,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:22,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:56:22,641 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash 687578534, now seen corresponding path program 1 times [2022-11-20 10:56:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:22,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75985855] [2022-11-20 10:56:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:56:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:56:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:56:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:56:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:56:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:56:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:22,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:22,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75985855] [2022-11-20 10:56:22,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75985855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:22,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:22,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624445588] [2022-11-20 10:56:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:22,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:22,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:22,726 INFO L87 Difference]: Start difference. First operand 2995 states and 3930 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:23,888 INFO L93 Difference]: Finished difference Result 6512 states and 8764 transitions. [2022-11-20 10:56:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-20 10:56:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:23,906 INFO L225 Difference]: With dead ends: 6512 [2022-11-20 10:56:23,906 INFO L226 Difference]: Without dead ends: 3698 [2022-11-20 10:56:23,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:23,915 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 123 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:23,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 601 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:56:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2022-11-20 10:56:24,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3002. [2022-11-20 10:56:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2233 states have (on average 1.3134796238244515) internal successors, (2933), 2257 states have internal predecessors, (2933), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-11-20 10:56:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3937 transitions. [2022-11-20 10:56:24,526 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3937 transitions. Word has length 104 [2022-11-20 10:56:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:24,526 INFO L495 AbstractCegarLoop]: Abstraction has 3002 states and 3937 transitions. [2022-11-20 10:56:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3937 transitions. [2022-11-20 10:56:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:56:24,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:24,528 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:56:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:56:24,529 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1642694862, now seen corresponding path program 1 times [2022-11-20 10:56:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:24,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198945221] [2022-11-20 10:56:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:56:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 10:56:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:56:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:56:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:56:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 10:56:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:56:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:24,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198945221] [2022-11-20 10:56:24,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198945221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:24,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:24,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953381713] [2022-11-20 10:56:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:24,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:24,661 INFO L87 Difference]: Start difference. First operand 3002 states and 3937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:25,430 INFO L93 Difference]: Finished difference Result 6499 states and 8755 transitions. [2022-11-20 10:56:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:25,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-20 10:56:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:25,443 INFO L225 Difference]: With dead ends: 6499 [2022-11-20 10:56:25,443 INFO L226 Difference]: Without dead ends: 3616 [2022-11-20 10:56:25,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:25,449 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 204 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:25,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 764 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-11-20 10:56:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2759. [2022-11-20 10:56:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2049 states have (on average 1.3128355295265983) internal successors, (2690), 2068 states have internal predecessors, (2690), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-11-20 10:56:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3618 transitions. [2022-11-20 10:56:25,949 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3618 transitions. Word has length 104 [2022-11-20 10:56:25,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:25,949 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 3618 transitions. [2022-11-20 10:56:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:56:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3618 transitions. [2022-11-20 10:56:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 10:56:25,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:25,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 10:56:25,955 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2091605457, now seen corresponding path program 1 times [2022-11-20 10:56:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:25,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885760423] [2022-11-20 10:56:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:56:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 10:56:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:56:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 10:56:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:56:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 10:56:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 10:56:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:56:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 10:56:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:56:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 10:56:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:56:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-20 10:56:26,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885760423] [2022-11-20 10:56:26,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885760423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:26,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166126930] [2022-11-20 10:56:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:26,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:26,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:26,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:56:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:56:26,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 10:56:26,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 10:56:27,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166126930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:27,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:27,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 10:56:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788668124] [2022-11-20 10:56:27,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:56:27,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:56:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:27,119 INFO L87 Difference]: Start difference. First operand 2759 states and 3618 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-20 10:56:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:32,315 INFO L93 Difference]: Finished difference Result 9030 states and 12680 transitions. [2022-11-20 10:56:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:56:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 153 [2022-11-20 10:56:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:32,340 INFO L225 Difference]: With dead ends: 9030 [2022-11-20 10:56:32,341 INFO L226 Difference]: Without dead ends: 6521 [2022-11-20 10:56:32,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:56:32,349 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 3198 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 1087 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3198 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:32,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3198 Valid, 2451 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:56:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2022-11-20 10:56:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 3484. [2022-11-20 10:56:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 2595 states have (on average 1.3044315992292872) internal successors, (3385), 2619 states have internal predecessors, (3385), 575 states have call successors, (575), 313 states have call predecessors, (575), 313 states have return successors, (575), 551 states have call predecessors, (575), 575 states have call successors, (575) [2022-11-20 10:56:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 4535 transitions. [2022-11-20 10:56:33,133 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 4535 transitions. Word has length 153 [2022-11-20 10:56:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:33,134 INFO L495 AbstractCegarLoop]: Abstraction has 3484 states and 4535 transitions. [2022-11-20 10:56:33,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-20 10:56:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 4535 transitions. [2022-11-20 10:56:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-20 10:56:33,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:33,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:33,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:33,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 10:56:33,347 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1525956170, now seen corresponding path program 1 times [2022-11-20 10:56:33,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:33,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198599371] [2022-11-20 10:56:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:56:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:56:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:56:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:56:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:56:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:56:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:56:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 10:56:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 10:56:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:56:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 10:56:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 10:56:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-20 10:56:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 10:56:33,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198599371] [2022-11-20 10:56:33,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198599371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016174649] [2022-11-20 10:56:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:33,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:33,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:33,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:56:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:34,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:56:34,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:56:34,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-20 10:56:34,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016174649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:34,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:34,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-11-20 10:56:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226554601] [2022-11-20 10:56:34,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:34,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:56:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:56:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:56:34,610 INFO L87 Difference]: Start difference. First operand 3484 states and 4535 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-20 10:56:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:47,398 INFO L93 Difference]: Finished difference Result 16121 states and 21978 transitions. [2022-11-20 10:56:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-20 10:56:47,399 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 162 [2022-11-20 10:56:47,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:47,456 INFO L225 Difference]: With dead ends: 16121 [2022-11-20 10:56:47,456 INFO L226 Difference]: Without dead ends: 12917 [2022-11-20 10:56:47,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5084 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-11-20 10:56:47,471 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 5908 mSDsluCounter, 11863 mSDsCounter, 0 mSdLazyCounter, 5823 mSolverCounterSat, 3820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5908 SdHoareTripleChecker+Valid, 13280 SdHoareTripleChecker+Invalid, 9643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3820 IncrementalHoareTripleChecker+Valid, 5823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:47,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5908 Valid, 13280 Invalid, 9643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3820 Valid, 5823 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 10:56:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12917 states. [2022-11-20 10:56:48,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12917 to 6123. [2022-11-20 10:56:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 4566 states have (on average 1.307928164695576) internal successors, (5972), 4607 states have internal predecessors, (5972), 1005 states have call successors, (1005), 551 states have call predecessors, (1005), 551 states have return successors, (1005), 964 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-11-20 10:56:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7982 transitions. [2022-11-20 10:56:48,875 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7982 transitions. Word has length 162 [2022-11-20 10:56:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:48,876 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 7982 transitions. [2022-11-20 10:56:48,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-20 10:56:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7982 transitions. [2022-11-20 10:56:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 10:56:48,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:48,890 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:48,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:49,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 10:56:49,098 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1398060454, now seen corresponding path program 1 times [2022-11-20 10:56:49,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:49,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856991611] [2022-11-20 10:56:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:49,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:56:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:56:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:56:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:56:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:56:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:56:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:56:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:56:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 10:56:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:56:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:56:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:56:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:56:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 10:56:49,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:49,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856991611] [2022-11-20 10:56:49,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856991611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:49,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:49,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:56:49,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097080684] [2022-11-20 10:56:49,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:49,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:56:49,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:56:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:56:49,359 INFO L87 Difference]: Start difference. First operand 6123 states and 7982 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:56:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:53,353 INFO L93 Difference]: Finished difference Result 20263 states and 27126 transitions. [2022-11-20 10:56:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:56:53,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 164 [2022-11-20 10:56:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:53,409 INFO L225 Difference]: With dead ends: 20263 [2022-11-20 10:56:53,410 INFO L226 Difference]: Without dead ends: 14503 [2022-11-20 10:56:53,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:53,425 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 601 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:53,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2575 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:56:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14503 states. [2022-11-20 10:56:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 8315. [2022-11-20 10:56:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8315 states, 6152 states have (on average 1.3052665799739922) internal successors, (8030), 6210 states have internal predecessors, (8030), 1408 states have call successors, (1408), 754 states have call predecessors, (1408), 754 states have return successors, (1408), 1350 states have call predecessors, (1408), 1408 states have call successors, (1408) [2022-11-20 10:56:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 10846 transitions. [2022-11-20 10:56:55,372 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 10846 transitions. Word has length 164 [2022-11-20 10:56:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:55,373 INFO L495 AbstractCegarLoop]: Abstraction has 8315 states and 10846 transitions. [2022-11-20 10:56:55,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 10:56:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 10846 transitions. [2022-11-20 10:56:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 10:56:55,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:55,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 10:56:55,390 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -554035669, now seen corresponding path program 1 times [2022-11-20 10:56:55,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:55,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542596722] [2022-11-20 10:56:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:56:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:56:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:56:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:56:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:56:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:56:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:56:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:56:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:56:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:56:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-20 10:56:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 10:56:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 10:56:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:56:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542596722] [2022-11-20 10:56:55,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542596722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030674074] [2022-11-20 10:56:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:55,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:55,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:56:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:56:55,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 10:56:56,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 10:56:56,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030674074] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:56,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:56:56,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2022-11-20 10:56:56,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438608357] [2022-11-20 10:56:56,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:56,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:56,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:56,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:56,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:56,140 INFO L87 Difference]: Start difference. First operand 8315 states and 10846 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:56:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:57,772 INFO L93 Difference]: Finished difference Result 13597 states and 17788 transitions. [2022-11-20 10:56:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:57,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 166 [2022-11-20 10:56:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:57,791 INFO L225 Difference]: With dead ends: 13597 [2022-11-20 10:56:57,791 INFO L226 Difference]: Without dead ends: 5478 [2022-11-20 10:56:57,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:56:57,806 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 2 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:57,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 983 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-11-20 10:56:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5246. [2022-11-20 10:56:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 3884 states have (on average 1.304582904222451) internal successors, (5067), 3918 states have internal predecessors, (5067), 891 states have call successors, (891), 470 states have call predecessors, (891), 470 states have return successors, (891), 857 states have call predecessors, (891), 891 states have call successors, (891) [2022-11-20 10:56:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 6849 transitions. [2022-11-20 10:56:58,708 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 6849 transitions. Word has length 166 [2022-11-20 10:56:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:58,709 INFO L495 AbstractCegarLoop]: Abstraction has 5246 states and 6849 transitions. [2022-11-20 10:56:58,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:56:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 6849 transitions. [2022-11-20 10:56:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 10:56:58,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:58,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:58,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:58,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:58,932 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1076807478, now seen corresponding path program 1 times [2022-11-20 10:56:58,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:58,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292534458] [2022-11-20 10:56:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:58,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:56:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:56:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:56:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:56:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:56:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:56:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:56:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:56:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:56:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:56:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:56:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:56:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:56:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:56:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:56:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:56:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292534458] [2022-11-20 10:56:59,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292534458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612128204] [2022-11-20 10:56:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:59,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:59,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:59,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:56:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:56:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:57:00,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:57:00,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612128204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:00,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:00,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2022-11-20 10:57:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683004472] [2022-11-20 10:57:00,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:00,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:57:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:57:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:57:00,958 INFO L87 Difference]: Start difference. First operand 5246 states and 6849 transitions. Second operand has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-11-20 10:57:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:37,589 INFO L93 Difference]: Finished difference Result 27469 states and 38974 transitions. [2022-11-20 10:57:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-11-20 10:57:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 167 [2022-11-20 10:57:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:37,677 INFO L225 Difference]: With dead ends: 27469 [2022-11-20 10:57:37,677 INFO L226 Difference]: Without dead ends: 22476 [2022-11-20 10:57:37,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36381 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=8921, Invalid=73735, Unknown=0, NotChecked=0, Total=82656 [2022-11-20 10:57:37,708 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 6588 mSDsluCounter, 6959 mSDsCounter, 0 mSdLazyCounter, 9031 mSolverCounterSat, 5666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6588 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 14697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5666 IncrementalHoareTripleChecker+Valid, 9031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:37,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6588 Valid, 8178 Invalid, 14697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5666 Valid, 9031 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-20 10:57:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22476 states. [2022-11-20 10:57:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22476 to 8807. [2022-11-20 10:57:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8807 states, 6608 states have (on average 1.3053874092009685) internal successors, (8626), 6661 states have internal predecessors, (8626), 1422 states have call successors, (1422), 776 states have call predecessors, (1422), 776 states have return successors, (1422), 1369 states have call predecessors, (1422), 1422 states have call successors, (1422) [2022-11-20 10:57:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 11470 transitions. [2022-11-20 10:57:40,289 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 11470 transitions. Word has length 167 [2022-11-20 10:57:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:40,290 INFO L495 AbstractCegarLoop]: Abstraction has 8807 states and 11470 transitions. [2022-11-20 10:57:40,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-11-20 10:57:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 11470 transitions. [2022-11-20 10:57:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 10:57:40,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:40,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:40,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:40,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:40,519 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1131228575, now seen corresponding path program 1 times [2022-11-20 10:57:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:40,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729289436] [2022-11-20 10:57:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:57:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:57:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:57:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:57:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:57:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:57:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:57:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:57:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:57:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:57:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:57:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:57:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:57:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 10:57:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 10:57:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:57:41,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:41,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729289436] [2022-11-20 10:57:41,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729289436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:41,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634539998] [2022-11-20 10:57:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:41,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:41,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:41,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:41,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:57:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 10:57:41,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:57:43,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:57:43,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634539998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:43,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:43,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2022-11-20 10:57:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109515298] [2022-11-20 10:57:43,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:43,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:57:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:57:43,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:57:43,972 INFO L87 Difference]: Start difference. First operand 8807 states and 11470 transitions. Second operand has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:58:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:00,446 INFO L93 Difference]: Finished difference Result 22897 states and 30837 transitions. [2022-11-20 10:58:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-20 10:58:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 167 [2022-11-20 10:58:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:00,493 INFO L225 Difference]: With dead ends: 22897 [2022-11-20 10:58:00,493 INFO L226 Difference]: Without dead ends: 14350 [2022-11-20 10:58:00,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1245, Invalid=7685, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 10:58:00,509 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 2421 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 4186 mSolverCounterSat, 1027 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 6271 SdHoareTripleChecker+Invalid, 5213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1027 IncrementalHoareTripleChecker+Valid, 4186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 6271 Invalid, 5213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1027 Valid, 4186 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 10:58:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14350 states. [2022-11-20 10:58:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14350 to 9762. [2022-11-20 10:58:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 7335 states have (on average 1.3015678254942058) internal successors, (9547), 7394 states have internal predecessors, (9547), 1562 states have call successors, (1562), 864 states have call predecessors, (1562), 864 states have return successors, (1562), 1503 states have call predecessors, (1562), 1562 states have call successors, (1562) [2022-11-20 10:58:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 12671 transitions. [2022-11-20 10:58:03,461 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 12671 transitions. Word has length 167 [2022-11-20 10:58:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:03,462 INFO L495 AbstractCegarLoop]: Abstraction has 9762 states and 12671 transitions. [2022-11-20 10:58:03,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:58:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 12671 transitions. [2022-11-20 10:58:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 10:58:03,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:03,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:03,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:03,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:03,682 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1406110508, now seen corresponding path program 1 times [2022-11-20 10:58:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:03,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970677516] [2022-11-20 10:58:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:58:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:58:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:58:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:58:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:58:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:58:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:58:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:58:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:58:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 10:58:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-20 10:58:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:58:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 10:58:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 10:58:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:58:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 10:58:04,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970677516] [2022-11-20 10:58:04,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970677516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172170012] [2022-11-20 10:58:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:04,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:04,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:04,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:58:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:04,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:58:04,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 90 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 10:58:04,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 10:58:04,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172170012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:04,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:04,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-20 10:58:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616911105] [2022-11-20 10:58:04,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:04,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:58:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:58:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:58:04,801 INFO L87 Difference]: Start difference. First operand 9762 states and 12671 transitions. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 10:58:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:09,718 INFO L93 Difference]: Finished difference Result 27462 states and 35780 transitions. [2022-11-20 10:58:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:58:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 169 [2022-11-20 10:58:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:09,775 INFO L225 Difference]: With dead ends: 27462 [2022-11-20 10:58:09,775 INFO L226 Difference]: Without dead ends: 18049 [2022-11-20 10:58:09,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:58:09,797 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 500 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:09,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 2343 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:58:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18049 states. [2022-11-20 10:58:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18049 to 13085. [2022-11-20 10:58:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13085 states, 9875 states have (on average 1.2836455696202531) internal successors, (12676), 9963 states have internal predecessors, (12676), 2039 states have call successors, (2039), 1170 states have call predecessors, (2039), 1170 states have return successors, (2039), 1951 states have call predecessors, (2039), 2039 states have call successors, (2039) [2022-11-20 10:58:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13085 states to 13085 states and 16754 transitions. [2022-11-20 10:58:13,279 INFO L78 Accepts]: Start accepts. Automaton has 13085 states and 16754 transitions. Word has length 169 [2022-11-20 10:58:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:13,279 INFO L495 AbstractCegarLoop]: Abstraction has 13085 states and 16754 transitions. [2022-11-20 10:58:13,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-20 10:58:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13085 states and 16754 transitions. [2022-11-20 10:58:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 10:58:13,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:13,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:13,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:13,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 10:58:13,499 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash -173853014, now seen corresponding path program 1 times [2022-11-20 10:58:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783414917] [2022-11-20 10:58:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:13,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:58:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:58:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:58:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:58:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:58:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:58:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:58:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:58:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:58:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:58:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:58:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 10:58:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-20 10:58:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 10:58:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 10:58:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:58:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:14,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783414917] [2022-11-20 10:58:14,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783414917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:14,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021084265] [2022-11-20 10:58:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:14,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:14,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:14,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:14,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:58:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 10:58:14,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:58:15,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:58:16,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021084265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:16,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:16,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2022-11-20 10:58:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208574133] [2022-11-20 10:58:16,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:58:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:58:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:58:16,795 INFO L87 Difference]: Start difference. First operand 13085 states and 16754 transitions. Second operand has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:58:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:33,396 INFO L93 Difference]: Finished difference Result 27623 states and 36929 transitions. [2022-11-20 10:58:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-20 10:58:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 168 [2022-11-20 10:58:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:33,453 INFO L225 Difference]: With dead ends: 27623 [2022-11-20 10:58:33,453 INFO L226 Difference]: Without dead ends: 18506 [2022-11-20 10:58:33,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1112, Invalid=6720, Unknown=0, NotChecked=0, Total=7832 [2022-11-20 10:58:33,472 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 2229 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 1483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 7778 SdHoareTripleChecker+Invalid, 6303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:33,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 7778 Invalid, 6303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1483 Valid, 4820 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:58:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2022-11-20 10:58:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 12552. [2022-11-20 10:58:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 9498 states have (on average 1.2854285112655295) internal successors, (12209), 9578 states have internal predecessors, (12209), 1937 states have call successors, (1937), 1116 states have call predecessors, (1937), 1116 states have return successors, (1937), 1857 states have call predecessors, (1937), 1937 states have call successors, (1937) [2022-11-20 10:58:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 16083 transitions. [2022-11-20 10:58:37,342 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 16083 transitions. Word has length 168 [2022-11-20 10:58:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:37,343 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 16083 transitions. [2022-11-20 10:58:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-20 10:58:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 16083 transitions. [2022-11-20 10:58:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 10:58:37,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:37,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:37,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 10:58:37,551 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 26254598, now seen corresponding path program 1 times [2022-11-20 10:58:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:37,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029683918] [2022-11-20 10:58:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:58:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:58:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:58:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:58:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:58:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:58:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 10:58:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 10:58:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 10:58:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:58:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 10:58:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 10:58:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 10:58:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 10:58:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 10:58:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 10:58:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:37,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029683918] [2022-11-20 10:58:37,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029683918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:37,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591047723] [2022-11-20 10:58:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:37,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:37,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:37,858 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:37,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:58:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:38,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:58:38,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:58:38,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:58:39,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591047723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:39,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:39,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2022-11-20 10:58:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723186326] [2022-11-20 10:58:39,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:39,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:58:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:39,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:58:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:58:39,416 INFO L87 Difference]: Start difference. First operand 12552 states and 16083 transitions. Second operand has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 10:58:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:55,007 INFO L93 Difference]: Finished difference Result 33868 states and 45717 transitions. [2022-11-20 10:58:55,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-20 10:58:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) Word has length 169 [2022-11-20 10:58:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:55,058 INFO L225 Difference]: With dead ends: 33868 [2022-11-20 10:58:55,058 INFO L226 Difference]: Without dead ends: 21474 [2022-11-20 10:58:55,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1539, Invalid=5771, Unknown=0, NotChecked=0, Total=7310 [2022-11-20 10:58:55,077 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 2966 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 4116 mSolverCounterSat, 1411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1411 IncrementalHoareTripleChecker+Valid, 4116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:55,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2966 Valid, 6218 Invalid, 5527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1411 Valid, 4116 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 10:58:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21474 states. [2022-11-20 10:58:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21474 to 12421. [2022-11-20 10:58:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12421 states, 9410 states have (on average 1.2731137088204039) internal successors, (11980), 9487 states have internal predecessors, (11980), 1906 states have call successors, (1906), 1104 states have call predecessors, (1906), 1104 states have return successors, (1906), 1829 states have call predecessors, (1906), 1906 states have call successors, (1906) [2022-11-20 10:58:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12421 states to 12421 states and 15792 transitions. [2022-11-20 10:58:58,875 INFO L78 Accepts]: Start accepts. Automaton has 12421 states and 15792 transitions. Word has length 169 [2022-11-20 10:58:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:58,875 INFO L495 AbstractCegarLoop]: Abstraction has 12421 states and 15792 transitions. [2022-11-20 10:58:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2022-11-20 10:58:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12421 states and 15792 transitions. [2022-11-20 10:58:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:58:58,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:58,880 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 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] [2022-11-20 10:58:58,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:59,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 10:58:59,081 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash -848128133, now seen corresponding path program 1 times [2022-11-20 10:58:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:59,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17909305] [2022-11-20 10:58:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:58:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:58:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:58:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:58:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:58:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:58:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:58:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:58:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:58:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 10:58:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 10:58:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 10:58:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 10:58:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 10:58:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:58:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 10:58:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 10:58:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-20 10:58:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:59,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17909305] [2022-11-20 10:58:59,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17909305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:59,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:59,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:58:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471991927] [2022-11-20 10:58:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:58:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:59,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:58:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:58:59,348 INFO L87 Difference]: Start difference. First operand 12421 states and 15792 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:59:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:07,471 INFO L93 Difference]: Finished difference Result 32366 states and 42174 transitions. [2022-11-20 10:59:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:59:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 179 [2022-11-20 10:59:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:07,529 INFO L225 Difference]: With dead ends: 32366 [2022-11-20 10:59:07,529 INFO L226 Difference]: Without dead ends: 22833 [2022-11-20 10:59:07,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:59:07,542 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 471 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:07,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 2377 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:59:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22833 states. [2022-11-20 10:59:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22833 to 15928. [2022-11-20 10:59:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15928 states, 11952 states have (on average 1.2649765729585007) internal successors, (15119), 12066 states have internal predecessors, (15119), 2518 states have call successors, (2518), 1457 states have call predecessors, (2518), 1457 states have return successors, (2518), 2404 states have call predecessors, (2518), 2518 states have call successors, (2518) [2022-11-20 10:59:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15928 states to 15928 states and 20155 transitions. [2022-11-20 10:59:12,148 INFO L78 Accepts]: Start accepts. Automaton has 15928 states and 20155 transitions. Word has length 179 [2022-11-20 10:59:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:12,149 INFO L495 AbstractCegarLoop]: Abstraction has 15928 states and 20155 transitions. [2022-11-20 10:59:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:59:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15928 states and 20155 transitions. [2022-11-20 10:59:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-20 10:59:12,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:12,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 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] [2022-11-20 10:59:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 10:59:12,159 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2097807134, now seen corresponding path program 1 times [2022-11-20 10:59:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624645488] [2022-11-20 10:59:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:59:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:59:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:59:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:59:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:59:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:59:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:59:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:59:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:59:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 10:59:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 10:59:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 10:59:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 10:59:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:59:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:59:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:59:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 10:59:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 10:59:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624645488] [2022-11-20 10:59:12,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624645488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993556378] [2022-11-20 10:59:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:12,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:12,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:12,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:59:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:59:13,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 10:59:13,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:59:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-20 10:59:13,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993556378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:59:13,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:59:13,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2022-11-20 10:59:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409243314] [2022-11-20 10:59:13,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:59:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:59:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:59:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:59:13,560 INFO L87 Difference]: Start difference. First operand 15928 states and 20155 transitions. Second operand has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-11-20 10:59:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:27,677 INFO L93 Difference]: Finished difference Result 40349 states and 53292 transitions. [2022-11-20 10:59:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 10:59:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) Word has length 180 [2022-11-20 10:59:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:27,766 INFO L225 Difference]: With dead ends: 40349 [2022-11-20 10:59:27,766 INFO L226 Difference]: Without dead ends: 24601 [2022-11-20 10:59:27,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 10:59:27,792 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1560 mSDsluCounter, 6663 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 4651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:27,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 7481 Invalid, 4651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [862 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 10:59:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24601 states. [2022-11-20 10:59:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24601 to 16145. [2022-11-20 10:59:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2645092049863782) internal successors, (15317), 12230 states have internal predecessors, (15317), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-11-20 10:59:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20417 transitions. [2022-11-20 10:59:34,068 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20417 transitions. Word has length 180 [2022-11-20 10:59:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20417 transitions. [2022-11-20 10:59:34,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-11-20 10:59:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20417 transitions. [2022-11-20 10:59:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 10:59:34,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:34,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:34,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 10:59:34,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 10:59:34,286 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:34,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1449253258, now seen corresponding path program 1 times [2022-11-20 10:59:34,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:34,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542094529] [2022-11-20 10:59:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:59:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:59:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 10:59:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:59:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:59:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:59:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 10:59:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 10:59:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 10:59:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 10:59:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 10:59:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:59:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-20 10:59:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:59:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 10:59:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 10:59:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 10:59:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 10:59:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-20 10:59:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542094529] [2022-11-20 10:59:34,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542094529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518532901] [2022-11-20 10:59:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:34,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:34,702 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:34,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:59:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:34,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:59:34,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-20 10:59:35,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518532901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:35,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:59:35,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-20 10:59:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687065854] [2022-11-20 10:59:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:59:35,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:59:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:59:35,122 INFO L87 Difference]: Start difference. First operand 16145 states and 20417 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:59:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:43,269 INFO L93 Difference]: Finished difference Result 35823 states and 46499 transitions. [2022-11-20 10:59:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:59:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 188 [2022-11-20 10:59:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:43,322 INFO L225 Difference]: With dead ends: 35823 [2022-11-20 10:59:43,322 INFO L226 Difference]: Without dead ends: 20086 [2022-11-20 10:59:43,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:59:43,342 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 609 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:43,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1814 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:59:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20086 states. [2022-11-20 10:59:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20086 to 16145. [2022-11-20 10:59:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2572442830017336) internal successors, (15229), 12230 states have internal predecessors, (15229), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-11-20 10:59:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20329 transitions. [2022-11-20 10:59:49,777 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20329 transitions. Word has length 188 [2022-11-20 10:59:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:49,778 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20329 transitions. [2022-11-20 10:59:49,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:59:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20329 transitions. [2022-11-20 10:59:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-20 10:59:49,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:49,784 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-11-20 10:59:49,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 10:59:49,986 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash -776127958, now seen corresponding path program 1 times [2022-11-20 10:59:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451124925] [2022-11-20 10:59:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:59:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:59:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:59:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:59:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:59:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:59:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 10:59:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:59:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:59:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 10:59:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 10:59:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 10:59:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 10:59:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 10:59:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 10:59:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 10:59:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 10:59:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 10:59:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 10:59:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:50,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451124925] [2022-11-20 10:59:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451124925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286294503] [2022-11-20 10:59:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:50,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:50,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:50,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:59:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:50,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:59:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 10:59:50,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:59:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 10:59:51,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286294503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:59:51,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:59:51,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-11-20 10:59:51,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445440314] [2022-11-20 10:59:51,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:59:51,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:59:51,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:51,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:59:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:59:51,199 INFO L87 Difference]: Start difference. First operand 16145 states and 20329 transitions. Second operand has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-20 10:59:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:58,924 INFO L93 Difference]: Finished difference Result 27447 states and 34910 transitions. [2022-11-20 10:59:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:59:58,925 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 193 [2022-11-20 10:59:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:58,967 INFO L225 Difference]: With dead ends: 27447 [2022-11-20 10:59:58,967 INFO L226 Difference]: Without dead ends: 17685 [2022-11-20 10:59:58,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 419 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:59:58,985 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1116 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:58,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 4275 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:59:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17685 states. [2022-11-20 11:00:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17685 to 16145. [2022-11-20 11:00:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2543548253942045) internal successors, (15194), 12230 states have internal predecessors, (15194), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-11-20 11:00:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20294 transitions. [2022-11-20 11:00:04,646 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20294 transitions. Word has length 193 [2022-11-20 11:00:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:04,646 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20294 transitions. [2022-11-20 11:00:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-20 11:00:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20294 transitions. [2022-11-20 11:00:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-20 11:00:04,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:04,656 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:04,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 11:00:04,864 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash 259384864, now seen corresponding path program 1 times [2022-11-20 11:00:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:04,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625434010] [2022-11-20 11:00:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:00:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:00:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:00:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:00:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:00:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:00:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:00:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 11:00:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:00:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 11:00:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 11:00:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:00:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 11:00:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 11:00:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 11:00:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 11:00:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-20 11:00:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:00:05,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625434010] [2022-11-20 11:00:05,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625434010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:05,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:00:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360990947] [2022-11-20 11:00:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:00:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:00:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:00:05,338 INFO L87 Difference]: Start difference. First operand 16145 states and 20294 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:00:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:13,245 INFO L93 Difference]: Finished difference Result 28236 states and 36368 transitions. [2022-11-20 11:00:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:00:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 193 [2022-11-20 11:00:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:13,280 INFO L225 Difference]: With dead ends: 28236 [2022-11-20 11:00:13,280 INFO L226 Difference]: Without dead ends: 18559 [2022-11-20 11:00:13,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:00:13,292 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 606 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:13,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1907 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:00:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18559 states. [2022-11-20 11:00:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18559 to 16138. [2022-11-20 11:00:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 12106 states have (on average 1.2533454485379152) internal successors, (15173), 12223 states have internal predecessors, (15173), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-11-20 11:00:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 20273 transitions. [2022-11-20 11:00:18,626 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 20273 transitions. Word has length 193 [2022-11-20 11:00:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:18,627 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 20273 transitions. [2022-11-20 11:00:18,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:00:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 20273 transitions. [2022-11-20 11:00:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 11:00:18,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:18,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:18,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 11:00:18,635 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1547793542, now seen corresponding path program 1 times [2022-11-20 11:00:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:18,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116482017] [2022-11-20 11:00:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:00:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:00:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:00:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:00:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:00:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:00:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:00:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:00:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 11:00:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:00:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 11:00:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 11:00:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 11:00:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 11:00:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 11:00:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 11:00:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 11:00:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 11:00:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:00:18,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:18,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116482017] [2022-11-20 11:00:18,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116482017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:18,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036118116] [2022-11-20 11:00:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:18,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:18,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:18,995 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:19,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:00:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:19,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:00:19,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 11:00:19,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-20 11:00:19,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036118116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:19,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:19,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 11:00:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16846998] [2022-11-20 11:00:19,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:00:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:00:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:00:19,655 INFO L87 Difference]: Start difference. First operand 16138 states and 20273 transitions. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-20 11:00:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:34,995 INFO L93 Difference]: Finished difference Result 41839 states and 55371 transitions. [2022-11-20 11:00:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:00:34,996 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 196 [2022-11-20 11:00:34,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:35,074 INFO L225 Difference]: With dead ends: 41839 [2022-11-20 11:00:35,074 INFO L226 Difference]: Without dead ends: 26198 [2022-11-20 11:00:35,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:00:35,093 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2156 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:35,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 4328 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:00:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26198 states. [2022-11-20 11:00:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26198 to 16432. [2022-11-20 11:00:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16432 states, 12356 states have (on average 1.250566526383943) internal successors, (15452), 12472 states have internal predecessors, (15452), 2572 states have call successors, (2572), 1503 states have call predecessors, (2572), 1503 states have return successors, (2572), 2456 states have call predecessors, (2572), 2572 states have call successors, (2572) [2022-11-20 11:00:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16432 states to 16432 states and 20596 transitions. [2022-11-20 11:00:41,948 INFO L78 Accepts]: Start accepts. Automaton has 16432 states and 20596 transitions. Word has length 196 [2022-11-20 11:00:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:41,949 INFO L495 AbstractCegarLoop]: Abstraction has 16432 states and 20596 transitions. [2022-11-20 11:00:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-20 11:00:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 16432 states and 20596 transitions. [2022-11-20 11:00:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-20 11:00:41,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:41,957 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:41,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-20 11:00:42,157 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1158341999, now seen corresponding path program 1 times [2022-11-20 11:00:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667360957] [2022-11-20 11:00:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:00:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:00:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:00:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:00:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:00:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:00:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:00:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 11:00:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:00:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 11:00:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 11:00:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 11:00:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 11:00:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 11:00:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 11:00:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-20 11:00:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-20 11:00:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-20 11:00:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667360957] [2022-11-20 11:00:42,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667360957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:42,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:42,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:00:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864120897] [2022-11-20 11:00:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:00:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:42,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:00:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:00:42,309 INFO L87 Difference]: Start difference. First operand 16432 states and 20596 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:00:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:49,406 INFO L93 Difference]: Finished difference Result 27727 states and 35165 transitions. [2022-11-20 11:00:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:00:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 195 [2022-11-20 11:00:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:49,448 INFO L225 Difference]: With dead ends: 27727 [2022-11-20 11:00:49,448 INFO L226 Difference]: Without dead ends: 17750 [2022-11-20 11:00:49,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:00:49,467 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 345 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:49,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1057 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:00:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2022-11-20 11:00:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 17067. [2022-11-20 11:00:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17067 states, 12811 states have (on average 1.2509562095074545) internal successors, (16026), 12933 states have internal predecessors, (16026), 2687 states have call successors, (2687), 1568 states have call predecessors, (2687), 1568 states have return successors, (2687), 2565 states have call predecessors, (2687), 2687 states have call successors, (2687) [2022-11-20 11:00:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17067 states to 17067 states and 21400 transitions. [2022-11-20 11:00:55,833 INFO L78 Accepts]: Start accepts. Automaton has 17067 states and 21400 transitions. Word has length 195 [2022-11-20 11:00:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:55,833 INFO L495 AbstractCegarLoop]: Abstraction has 17067 states and 21400 transitions. [2022-11-20 11:00:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:00:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17067 states and 21400 transitions. [2022-11-20 11:00:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 11:00:55,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:55,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:00:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 11:00:55,840 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1499966138, now seen corresponding path program 1 times [2022-11-20 11:00:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:00:55,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437619453] [2022-11-20 11:00:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:00:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:00:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:00:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:00:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:00:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:00:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:00:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 11:00:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:00:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 11:00:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:00:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 11:00:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 11:00:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:00:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 11:00:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 11:00:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 11:00:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 11:00:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-20 11:00:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-20 11:00:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 11:00:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:00:56,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437619453] [2022-11-20 11:00:56,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437619453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:00:56,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952394114] [2022-11-20 11:00:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:56,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:00:56,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:00:56,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:00:56,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:00:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:56,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:00:56,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 42 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:00:56,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-20 11:00:57,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952394114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:57,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:00:57,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-11-20 11:00:57,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29971167] [2022-11-20 11:00:57,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:57,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:00:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:00:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:00:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:00:57,093 INFO L87 Difference]: Start difference. First operand 17067 states and 21400 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-11-20 11:01:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:15,589 INFO L93 Difference]: Finished difference Result 39740 states and 51329 transitions. [2022-11-20 11:01:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-20 11:01:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 201 [2022-11-20 11:01:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:15,650 INFO L225 Difference]: With dead ends: 39740 [2022-11-20 11:01:15,650 INFO L226 Difference]: Without dead ends: 28673 [2022-11-20 11:01:15,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-11-20 11:01:15,667 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 3721 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 2019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3721 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 4742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2019 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:15,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3721 Valid, 7802 Invalid, 4742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2019 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:01:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28673 states. [2022-11-20 11:01:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28673 to 18711. [2022-11-20 11:01:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18711 states, 14043 states have (on average 1.2461012604144415) internal successors, (17499), 14177 states have internal predecessors, (17499), 2904 states have call successors, (2904), 1763 states have call predecessors, (2904), 1763 states have return successors, (2904), 2770 states have call predecessors, (2904), 2904 states have call successors, (2904) [2022-11-20 11:01:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 23307 transitions. [2022-11-20 11:01:23,315 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 23307 transitions. Word has length 201 [2022-11-20 11:01:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:23,316 INFO L495 AbstractCegarLoop]: Abstraction has 18711 states and 23307 transitions. [2022-11-20 11:01:23,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-11-20 11:01:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 23307 transitions. [2022-11-20 11:01:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-20 11:01:23,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:23,321 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:23,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:23,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-20 11:01:23,522 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1104702064, now seen corresponding path program 1 times [2022-11-20 11:01:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240870712] [2022-11-20 11:01:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:01:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:01:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:01:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:01:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:01:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:01:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:01:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:01:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:01:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:01:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:01:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 11:01:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 11:01:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-20 11:01:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 11:01:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-20 11:01:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-20 11:01:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-20 11:01:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:01:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240870712] [2022-11-20 11:01:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240870712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205035728] [2022-11-20 11:01:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:24,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:24,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:01:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:24,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:01:24,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 11:01:24,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:01:25,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205035728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:25,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:25,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2022-11-20 11:01:25,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581174090] [2022-11-20 11:01:25,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:25,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:01:25,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:01:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:01:25,036 INFO L87 Difference]: Start difference. First operand 18711 states and 23307 transitions. Second operand has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-11-20 11:01:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:44,081 INFO L93 Difference]: Finished difference Result 44352 states and 57012 transitions. [2022-11-20 11:01:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-20 11:01:44,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 205 [2022-11-20 11:01:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:44,161 INFO L225 Difference]: With dead ends: 44352 [2022-11-20 11:01:44,161 INFO L226 Difference]: Without dead ends: 25909 [2022-11-20 11:01:44,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1067, Invalid=5575, Unknown=0, NotChecked=0, Total=6642 [2022-11-20 11:01:44,182 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2481 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 4979 mSolverCounterSat, 1633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2481 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1633 IncrementalHoareTripleChecker+Valid, 4979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:44,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2481 Valid, 6773 Invalid, 6612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1633 Valid, 4979 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:01:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25909 states. [2022-11-20 11:01:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25909 to 18534. [2022-11-20 11:01:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18534 states, 13868 states have (on average 1.2484136140755697) internal successors, (17313), 13999 states have internal predecessors, (17313), 2908 states have call successors, (2908), 1757 states have call predecessors, (2908), 1757 states have return successors, (2908), 2777 states have call predecessors, (2908), 2908 states have call successors, (2908) [2022-11-20 11:01:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18534 states to 18534 states and 23129 transitions. [2022-11-20 11:01:51,892 INFO L78 Accepts]: Start accepts. Automaton has 18534 states and 23129 transitions. Word has length 205 [2022-11-20 11:01:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:51,892 INFO L495 AbstractCegarLoop]: Abstraction has 18534 states and 23129 transitions. [2022-11-20 11:01:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-11-20 11:01:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18534 states and 23129 transitions. [2022-11-20 11:01:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-20 11:01:51,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:51,896 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:51,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:52,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-20 11:01:52,097 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:52,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1002307938, now seen corresponding path program 1 times [2022-11-20 11:01:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:52,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112955792] [2022-11-20 11:01:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:01:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:01:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:01:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:01:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:01:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:01:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:01:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:01:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:01:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:01:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:01:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:01:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:01:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 11:01:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 11:01:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 11:01:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-20 11:01:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-20 11:01:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-20 11:01:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-20 11:01:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-20 11:01:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112955792] [2022-11-20 11:01:52,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112955792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969709853] [2022-11-20 11:01:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:52,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:52,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:52,554 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:52,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:01:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:52,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:01:52,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:01:53,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 11:01:53,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969709853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:53,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:53,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2022-11-20 11:01:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425481670] [2022-11-20 11:01:53,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:01:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:01:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:01:53,328 INFO L87 Difference]: Start difference. First operand 18534 states and 23129 transitions. Second operand has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2022-11-20 11:02:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:10,584 INFO L93 Difference]: Finished difference Result 47652 states and 61272 transitions. [2022-11-20 11:02:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:02:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) Word has length 209 [2022-11-20 11:02:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:10,701 INFO L225 Difference]: With dead ends: 47652 [2022-11-20 11:02:10,701 INFO L226 Difference]: Without dead ends: 30775 [2022-11-20 11:02:10,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:02:10,726 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1837 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:10,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 5464 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:02:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2022-11-20 11:02:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 18919. [2022-11-20 11:02:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18919 states, 14175 states have (on average 1.2488183421516754) internal successors, (17702), 14313 states have internal predecessors, (17702), 2956 states have call successors, (2956), 1787 states have call predecessors, (2956), 1787 states have return successors, (2956), 2818 states have call predecessors, (2956), 2956 states have call successors, (2956) [2022-11-20 11:02:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18919 states to 18919 states and 23614 transitions. [2022-11-20 11:02:19,537 INFO L78 Accepts]: Start accepts. Automaton has 18919 states and 23614 transitions. Word has length 209 [2022-11-20 11:02:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:19,538 INFO L495 AbstractCegarLoop]: Abstraction has 18919 states and 23614 transitions. [2022-11-20 11:02:19,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2022-11-20 11:02:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 18919 states and 23614 transitions. [2022-11-20 11:02:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 11:02:19,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:19,543 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:19,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-20 11:02:19,747 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:19,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1639295813, now seen corresponding path program 1 times [2022-11-20 11:02:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:19,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363677132] [2022-11-20 11:02:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:02:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:02:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:02:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:02:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:02:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:02:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:02:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:02:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:02:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:02:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:02:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:02:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:02:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 11:02:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 11:02:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 11:02:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 11:02:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 11:02:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-20 11:02:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-20 11:02:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 11:02:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363677132] [2022-11-20 11:02:20,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363677132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664781435] [2022-11-20 11:02:20,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:20,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:20,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:20,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:02:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:20,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:02:20,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-20 11:02:20,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 11:02:21,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664781435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:21,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:02:21,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2022-11-20 11:02:21,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71566351] [2022-11-20 11:02:21,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:02:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:02:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:02:21,358 INFO L87 Difference]: Start difference. First operand 18919 states and 23614 transitions. Second operand has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2022-11-20 11:02:33,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:33,769 INFO L93 Difference]: Finished difference Result 39263 states and 49658 transitions. [2022-11-20 11:02:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:02:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) Word has length 212 [2022-11-20 11:02:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:33,840 INFO L225 Difference]: With dead ends: 39263 [2022-11-20 11:02:33,841 INFO L226 Difference]: Without dead ends: 22841 [2022-11-20 11:02:33,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:02:33,868 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1962 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:33,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 3147 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:02:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22841 states. [2022-11-20 11:02:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22841 to 21085. [2022-11-20 11:02:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21085 states, 15768 states have (on average 1.2515854895991883) internal successors, (19735), 15924 states have internal predecessors, (19735), 3316 states have call successors, (3316), 2000 states have call predecessors, (3316), 2000 states have return successors, (3316), 3160 states have call predecessors, (3316), 3316 states have call successors, (3316) [2022-11-20 11:02:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21085 states to 21085 states and 26367 transitions. [2022-11-20 11:02:43,784 INFO L78 Accepts]: Start accepts. Automaton has 21085 states and 26367 transitions. Word has length 212 [2022-11-20 11:02:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:43,784 INFO L495 AbstractCegarLoop]: Abstraction has 21085 states and 26367 transitions. [2022-11-20 11:02:43,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2022-11-20 11:02:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 21085 states and 26367 transitions. [2022-11-20 11:02:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-20 11:02:43,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:43,788 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:43,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:43,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-20 11:02:43,989 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1740177431, now seen corresponding path program 1 times [2022-11-20 11:02:43,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:43,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520727806] [2022-11-20 11:02:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:02:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:02:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:02:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:02:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:02:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:02:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:02:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:02:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:02:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 11:02:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 11:02:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:02:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:02:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 11:02:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 11:02:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 11:02:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-20 11:02:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-20 11:02:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-11-20 11:02:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-20 11:02:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 11:02:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:44,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520727806] [2022-11-20 11:02:44,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520727806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:44,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:44,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:02:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826347107] [2022-11-20 11:02:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:02:44,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:02:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:44,513 INFO L87 Difference]: Start difference. First operand 21085 states and 26367 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 11:02:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:56,503 INFO L93 Difference]: Finished difference Result 40748 states and 51745 transitions. [2022-11-20 11:02:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:02:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2022-11-20 11:02:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:56,587 INFO L225 Difference]: With dead ends: 40748 [2022-11-20 11:02:56,587 INFO L226 Difference]: Without dead ends: 23746 [2022-11-20 11:02:56,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:02:56,611 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 559 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:56,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 2172 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:02:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23746 states. [2022-11-20 11:03:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23746 to 20740. [2022-11-20 11:03:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20740 states, 15517 states have (on average 1.249403879615905) internal successors, (19387), 15666 states have internal predecessors, (19387), 3261 states have call successors, (3261), 1961 states have call predecessors, (3261), 1961 states have return successors, (3261), 3112 states have call predecessors, (3261), 3261 states have call successors, (3261) [2022-11-20 11:03:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20740 states to 20740 states and 25909 transitions. [2022-11-20 11:03:05,873 INFO L78 Accepts]: Start accepts. Automaton has 20740 states and 25909 transitions. Word has length 212 [2022-11-20 11:03:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:05,873 INFO L495 AbstractCegarLoop]: Abstraction has 20740 states and 25909 transitions. [2022-11-20 11:03:05,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 11:03:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 20740 states and 25909 transitions. [2022-11-20 11:03:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-20 11:03:05,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:05,881 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-11-20 11:03:05,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-20 11:03:05,882 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash -404797626, now seen corresponding path program 1 times [2022-11-20 11:03:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998893879] [2022-11-20 11:03:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:03:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:03:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:03:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:03:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:03:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:03:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:03:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:03:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:03:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 11:03:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:03:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:03:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 11:03:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-20 11:03:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 11:03:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-20 11:03:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:03:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-20 11:03:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:03:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-20 11:03:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:03:06,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:06,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998893879] [2022-11-20 11:03:06,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998893879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484536459] [2022-11-20 11:03:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:06,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:06,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:06,459 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:06,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:03:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:03:06,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 124 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:03:07,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:03:08,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484536459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:08,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:08,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2022-11-20 11:03:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161871007] [2022-11-20 11:03:08,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:08,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:03:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:08,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:03:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:03:08,136 INFO L87 Difference]: Start difference. First operand 20740 states and 25909 transitions. Second operand has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-20 11:03:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:40,594 INFO L93 Difference]: Finished difference Result 47944 states and 62640 transitions. [2022-11-20 11:03:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-20 11:03:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) Word has length 218 [2022-11-20 11:03:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:40,675 INFO L225 Difference]: With dead ends: 47944 [2022-11-20 11:03:40,675 INFO L226 Difference]: Without dead ends: 30064 [2022-11-20 11:03:40,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4600 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1577, Invalid=11763, Unknown=0, NotChecked=0, Total=13340 [2022-11-20 11:03:40,703 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 2941 mSDsluCounter, 11783 mSDsCounter, 0 mSdLazyCounter, 11565 mSolverCounterSat, 2175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 13300 SdHoareTripleChecker+Invalid, 13740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2175 IncrementalHoareTripleChecker+Valid, 11565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2941 Valid, 13300 Invalid, 13740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2175 Valid, 11565 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 11:03:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30064 states. [2022-11-20 11:03:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30064 to 20522. [2022-11-20 11:03:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20522 states, 15333 states have (on average 1.2512228526707103) internal successors, (19185), 15479 states have internal predecessors, (19185), 3249 states have call successors, (3249), 1939 states have call predecessors, (3249), 1939 states have return successors, (3249), 3103 states have call predecessors, (3249), 3249 states have call successors, (3249) [2022-11-20 11:03:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20522 states to 20522 states and 25683 transitions. [2022-11-20 11:03:49,828 INFO L78 Accepts]: Start accepts. Automaton has 20522 states and 25683 transitions. Word has length 218 [2022-11-20 11:03:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 20522 states and 25683 transitions. [2022-11-20 11:03:49,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2022-11-20 11:03:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 20522 states and 25683 transitions. [2022-11-20 11:03:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-20 11:03:49,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:49,832 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-11-20 11:03:49,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 11:03:50,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:50,033 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 682107359, now seen corresponding path program 1 times [2022-11-20 11:03:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:50,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238366174] [2022-11-20 11:03:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:03:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:03:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:03:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:03:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:03:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:03:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:03:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:03:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:03:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 11:03:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:03:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:03:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 11:03:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 11:03:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-20 11:03:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-20 11:03:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-20 11:03:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-20 11:03:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-20 11:03:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-11-20 11:03:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:03:50,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:50,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238366174] [2022-11-20 11:03:50,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238366174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:50,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107268129] [2022-11-20 11:03:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:50,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:50,613 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:50,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:03:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:50,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:03:50,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:03:51,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:03:51,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107268129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:51,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:51,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2022-11-20 11:03:51,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943260423] [2022-11-20 11:03:51,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:03:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:03:51,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:03:51,613 INFO L87 Difference]: Start difference. First operand 20522 states and 25683 transitions. Second operand has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-11-20 11:04:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:10,174 INFO L93 Difference]: Finished difference Result 50117 states and 64479 transitions. [2022-11-20 11:04:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:04:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) Word has length 219 [2022-11-20 11:04:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:10,260 INFO L225 Difference]: With dead ends: 50117 [2022-11-20 11:04:10,260 INFO L226 Difference]: Without dead ends: 32724 [2022-11-20 11:04:10,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:04:10,289 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 2029 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:10,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 3444 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:04:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32724 states. [2022-11-20 11:04:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32724 to 26736. [2022-11-20 11:04:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26736 states, 19975 states have (on average 1.2550187734668334) internal successors, (25069), 20170 states have internal predecessors, (25069), 4240 states have call successors, (4240), 2520 states have call predecessors, (4240), 2520 states have return successors, (4240), 4045 states have call predecessors, (4240), 4240 states have call successors, (4240) [2022-11-20 11:04:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26736 states to 26736 states and 33549 transitions. [2022-11-20 11:04:22,709 INFO L78 Accepts]: Start accepts. Automaton has 26736 states and 33549 transitions. Word has length 219 [2022-11-20 11:04:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:22,710 INFO L495 AbstractCegarLoop]: Abstraction has 26736 states and 33549 transitions. [2022-11-20 11:04:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-11-20 11:04:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 26736 states and 33549 transitions. [2022-11-20 11:04:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-20 11:04:22,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:22,715 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 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] [2022-11-20 11:04:22,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:22,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-20 11:04:22,916 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:22,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -82977731, now seen corresponding path program 1 times [2022-11-20 11:04:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:22,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851570836] [2022-11-20 11:04:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:04:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:04:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:04:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 11:04:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:04:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:04:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:04:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:04:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:04:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 11:04:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:04:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:04:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 11:04:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-20 11:04:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-20 11:04:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-20 11:04:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-20 11:04:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-20 11:04:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-11-20 11:04:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-20 11:04:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:04:23,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:23,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851570836] [2022-11-20 11:04:23,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851570836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:04:23,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572993181] [2022-11-20 11:04:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:23,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:04:23,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:04:23,457 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:04:23,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5ebe04-5250-418e-b557-5f64f3a83227/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:04:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:23,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:04:23,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 115 proven. 19 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 11:04:24,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 11:04:24,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572993181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:24,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:04:24,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 20 [2022-11-20 11:04:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402965887] [2022-11-20 11:04:24,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:04:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:04:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:04:24,430 INFO L87 Difference]: Start difference. First operand 26736 states and 33549 transitions. Second operand has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 8 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2022-11-20 11:05:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,087 INFO L93 Difference]: Finished difference Result 107811 states and 149658 transitions. [2022-11-20 11:05:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-20 11:05:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 8 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) Word has length 222 [2022-11-20 11:05:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,416 INFO L225 Difference]: With dead ends: 107811 [2022-11-20 11:05:30,416 INFO L226 Difference]: Without dead ends: 84382 [2022-11-20 11:05:30,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1674, Invalid=7256, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:05:30,455 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 4702 mSDsluCounter, 4950 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 4080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 5871 SdHoareTripleChecker+Invalid, 8993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4080 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 5871 Invalid, 8993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4080 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 11:05:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84382 states.