./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/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_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/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_99ee3af7-f14e-4d09-ae26-f6f43c92c346/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 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 --- 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 11:56:01,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:56:01,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:56:01,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:56:01,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:56:01,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:56:01,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:56:01,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:56:01,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:56:01,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:56:01,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:56:01,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:56:01,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:56:01,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:56:01,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:56:01,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:56:01,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:56:01,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:56:01,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:56:01,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:56:01,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:56:01,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:56:01,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:56:01,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:56:01,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:56:01,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:56:01,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:56:02,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:56:02,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:56:02,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:56:02,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:56:02,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:56:02,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:56:02,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:56:02,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:56:02,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:56:02,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:56:02,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:56:02,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:56:02,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:56:02,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:56:02,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:56:02,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:56:02,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:56:02,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:56:02,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:56:02,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:56:02,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:56:02,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:56:02,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:56:02,075 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:56:02,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:56:02,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:56:02,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:56:02,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:56:02,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:56:02,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:56:02,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:56:02,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:56:02,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:56:02,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:56:02,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:56:02,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:56:02,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:56:02,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:56:02,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:56:02,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:02,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:56:02,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:56:02,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:56:02,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:56:02,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:56:02,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:56:02,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:56:02,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:56:02,084 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_99ee3af7-f14e-4d09-ae26-f6f43c92c346/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7abfb9176afcd07735578408e79f372120c27df81ffb5983e2784997c7f45a43 [2022-11-20 11:56:02,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:56:02,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:56:02,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:56:02,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:56:02,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:56:02,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-11-20 11:56:06,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:56:06,888 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:56:06,889 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2022-11-20 11:56:06,927 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/data/9f316ed28/6c2b223c1d5c426aa702e0e82620b746/FLAGe2ec11739 [2022-11-20 11:56:06,946 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/data/9f316ed28/6c2b223c1d5c426aa702e0e82620b746 [2022-11-20 11:56:06,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:56:06,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:56:06,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:06,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:56:06,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:56:06,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:06" (1/1) ... [2022-11-20 11:56:06,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edafffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:06, skipping insertion in model container [2022-11-20 11:56:06,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:56:06" (1/1) ... [2022-11-20 11:56:06,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:56:07,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:56:07,478 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_99ee3af7-f14e-4d09-ae26-f6f43c92c346/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-11-20 11:56:07,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:07,842 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:56:07,920 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_99ee3af7-f14e-4d09-ae26-f6f43c92c346/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-11-20 11:56:08,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:56:08,061 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:56:08,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08 WrapperNode [2022-11-20 11:56:08,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:56:08,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:08,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:56:08,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:56:08,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,168 INFO L138 Inliner]: procedures = 95, calls = 342, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1163 [2022-11-20 11:56:08,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:56:08,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:56:08,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:56:08,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:56:08,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:56:08,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:56:08,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:56:08,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:56:08,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (1/1) ... [2022-11-20 11:56:08,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:56:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:08,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:56:08,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:56:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:56:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 11:56:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 11:56:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-20 11:56:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-20 11:56:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 11:56:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 11:56:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-20 11:56:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-20 11:56:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 11:56:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 11:56:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 11:56:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 11:56:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:56:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:56:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:56:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:56:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-20 11:56:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-20 11:56:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 11:56:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 11:56:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 11:56:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 11:56:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 11:56:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 11:56:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 11:56:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 11:56:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 11:56:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 11:56:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 11:56:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 11:56:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-20 11:56:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-20 11:56:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 11:56:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 11:56:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 11:56:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 11:56:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 11:56:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 11:56:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 11:56:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 11:56:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:56:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 11:56:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 11:56:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 11:56:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 11:56:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 11:56:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 11:56:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:56:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:56:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 11:56:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 11:56:08,652 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:56:08,655 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:56:10,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:56:10,325 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:56:10,325 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:56:10,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:10 BoogieIcfgContainer [2022-11-20 11:56:10,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:56:10,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:56:10,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:56:10,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:56:10,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:56:06" (1/3) ... [2022-11-20 11:56:10,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452dec6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:10, skipping insertion in model container [2022-11-20 11:56:10,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:56:08" (2/3) ... [2022-11-20 11:56:10,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452dec6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:56:10, skipping insertion in model container [2022-11-20 11:56:10,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:56:10" (3/3) ... [2022-11-20 11:56:10,340 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2022-11-20 11:56:10,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:56:10,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:56:10,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:56:10,524 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;@642c8b0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:56:10,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:56:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 11:56:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 11:56:10,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:10,576 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:10,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash -289934377, now seen corresponding path program 1 times [2022-11-20 11:56:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:10,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094587282] [2022-11-20 11:56:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:10,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:56:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:56:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:12,104 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 11:56:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094587282] [2022-11-20 11:56:12,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094587282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:12,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:12,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966588759] [2022-11-20 11:56:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:12,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:12,175 INFO L87 Difference]: Start difference. First operand has 569 states, 447 states have (on average 1.691275167785235) internal successors, (756), 468 states have internal predecessors, (756), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:21,614 INFO L93 Difference]: Finished difference Result 1379 states and 2333 transitions. [2022-11-20 11:56:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:56:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-20 11:56:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:21,661 INFO L225 Difference]: With dead ends: 1379 [2022-11-20 11:56:21,666 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:56:21,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:21,692 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1452 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:21,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1864 Invalid, 3324 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [411 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 11:56:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:56:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:56:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 460 states have internal predecessors, (744), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:56:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2022-11-20 11:56:22,046 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 102 [2022-11-20 11:56:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:22,048 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2022-11-20 11:56:22,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2022-11-20 11:56:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 11:56:22,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:22,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:22,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:56:22,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1378724081, now seen corresponding path program 1 times [2022-11-20 11:56:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:22,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769885129] [2022-11-20 11:56:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:22,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:56:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:22,777 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 11:56:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:22,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769885129] [2022-11-20 11:56:22,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769885129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:22,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:22,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:22,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475092847] [2022-11-20 11:56:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:22,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:22,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:22,783 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:31,216 INFO L93 Difference]: Finished difference Result 1365 states and 2295 transitions. [2022-11-20 11:56:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:56:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-20 11:56:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:31,228 INFO L225 Difference]: With dead ends: 1365 [2022-11-20 11:56:31,228 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:56:31,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:31,234 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1447 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:31,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1835 Invalid, 3325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [407 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-20 11:56:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:56:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:56:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 460 states have internal predecessors, (743), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:56:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2022-11-20 11:56:31,500 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 105 [2022-11-20 11:56:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:31,501 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2022-11-20 11:56:31,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2022-11-20 11:56:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-20 11:56:31,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:31,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:31,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:56:31,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash 776360423, now seen corresponding path program 1 times [2022-11-20 11:56:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:31,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390152078] [2022-11-20 11:56:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:56:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 11:56:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:32,270 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 11:56:32,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:32,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390152078] [2022-11-20 11:56:32,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390152078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:32,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:32,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:32,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370097100] [2022-11-20 11:56:32,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:32,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:32,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:32,274 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:40,503 INFO L93 Difference]: Finished difference Result 1365 states and 2294 transitions. [2022-11-20 11:56:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:56:40,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-11-20 11:56:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:40,515 INFO L225 Difference]: With dead ends: 1365 [2022-11-20 11:56:40,515 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:56:40,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:40,521 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1447 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2909 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1826 Invalid, 3321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 2909 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 11:56:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:56:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:56:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 460 states have internal predecessors, (742), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:56:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2022-11-20 11:56:40,680 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 106 [2022-11-20 11:56:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:40,681 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2022-11-20 11:56:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2022-11-20 11:56:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:56:40,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:40,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:40,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:56:40,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash -774044371, now seen corresponding path program 1 times [2022-11-20 11:56:40,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:40,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57122826] [2022-11-20 11:56:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:40,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:56:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:56:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:41,348 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 11:56:41,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:41,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57122826] [2022-11-20 11:56:41,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57122826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:41,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:41,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821742654] [2022-11-20 11:56:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:41,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:41,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:41,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:41,352 INFO L87 Difference]: Start difference. First operand 561 states and 929 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:49,397 INFO L93 Difference]: Finished difference Result 1365 states and 2293 transitions. [2022-11-20 11:56:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:56:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-20 11:56:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:49,406 INFO L225 Difference]: With dead ends: 1365 [2022-11-20 11:56:49,407 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:56:49,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:49,412 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1881 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:49,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 1754 Invalid, 3416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [572 Valid, 2844 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:56:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:56:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:56:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 460 states have internal predecessors, (741), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:56:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2022-11-20 11:56:49,594 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 107 [2022-11-20 11:56:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:49,594 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2022-11-20 11:56:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2022-11-20 11:56:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 11:56:49,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:49,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:49,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:56:49,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:49,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1648953309, now seen corresponding path program 1 times [2022-11-20 11:56:49,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:49,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717673475] [2022-11-20 11:56:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:49,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:56:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:56:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,275 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 11:56:50,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:50,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717673475] [2022-11-20 11:56:50,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717673475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:50,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:50,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:50,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061500631] [2022-11-20 11:56:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:50,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:50,279 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:58,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:58,222 INFO L93 Difference]: Finished difference Result 1365 states and 2292 transitions. [2022-11-20 11:56:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:56:58,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-20 11:56:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:58,231 INFO L225 Difference]: With dead ends: 1365 [2022-11-20 11:56:58,231 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:56:58,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:56:58,236 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1866 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:58,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 1771 Invalid, 3412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 11:56:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:56:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:56:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 460 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:56:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2022-11-20 11:56:58,429 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 108 [2022-11-20 11:56:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:58,430 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2022-11-20 11:56:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:56:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2022-11-20 11:56:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 11:56:58,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:58,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:56:58,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:56:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1236640105, now seen corresponding path program 1 times [2022-11-20 11:56:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:58,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490700139] [2022-11-20 11:56:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:56:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:56:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:56:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:56:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:56:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:56:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:56:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:56:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:59,250 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 11:56:59,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:59,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490700139] [2022-11-20 11:56:59,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490700139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:59,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:59,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:56:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427402030] [2022-11-20 11:56:59,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:56:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:56:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:56:59,254 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:07,683 INFO L93 Difference]: Finished difference Result 1325 states and 2216 transitions. [2022-11-20 11:57:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:57:07,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-20 11:57:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:07,691 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 11:57:07,691 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:57:07,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:07,696 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1538 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:07,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 1823 Invalid, 3353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [417 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 11:57:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:57:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:57:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6666666666666667) internal successors, (735), 460 states have internal predecessors, (735), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 922 transitions. [2022-11-20 11:57:07,849 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 922 transitions. Word has length 109 [2022-11-20 11:57:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:07,850 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 922 transitions. [2022-11-20 11:57:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 922 transitions. [2022-11-20 11:57:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 11:57:07,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:07,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:07,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:07,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -130417927, now seen corresponding path program 1 times [2022-11-20 11:57:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:07,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177583560] [2022-11-20 11:57:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:57:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:08,615 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 11:57:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177583560] [2022-11-20 11:57:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177583560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:08,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:08,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879583846] [2022-11-20 11:57:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:08,618 INFO L87 Difference]: Start difference. First operand 561 states and 922 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,243 INFO L93 Difference]: Finished difference Result 1325 states and 2211 transitions. [2022-11-20 11:57:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:57:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-20 11:57:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,250 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 11:57:17,250 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:57:17,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:17,255 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1093 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1898 Invalid, 3261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 11:57:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:57:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:57:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.655328798185941) internal successors, (730), 460 states have internal predecessors, (730), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 917 transitions. [2022-11-20 11:57:17,430 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 917 transitions. Word has length 110 [2022-11-20 11:57:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,431 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 917 transitions. [2022-11-20 11:57:17,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 917 transitions. [2022-11-20 11:57:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:57:17,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:57:17,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1310787858, now seen corresponding path program 1 times [2022-11-20 11:57:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552450430] [2022-11-20 11:57:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:57:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,162 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 11:57:18,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552450430] [2022-11-20 11:57:18,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552450430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748343635] [2022-11-20 11:57:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:18,165 INFO L87 Difference]: Start difference. First operand 561 states and 917 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:26,017 INFO L93 Difference]: Finished difference Result 1325 states and 2206 transitions. [2022-11-20 11:57:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:57:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-20 11:57:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:26,024 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 11:57:26,024 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:57:26,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:26,029 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1522 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 3200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:26,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1826 Invalid, 3200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:57:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:57:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:57:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 460 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 912 transitions. [2022-11-20 11:57:26,217 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 912 transitions. Word has length 111 [2022-11-20 11:57:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 912 transitions. [2022-11-20 11:57:26,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 912 transitions. [2022-11-20 11:57:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:57:26,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:26,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:26,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:57:26,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash -998793954, now seen corresponding path program 1 times [2022-11-20 11:57:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:26,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655412025] [2022-11-20 11:57:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:57:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:26,917 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 11:57:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:26,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655412025] [2022-11-20 11:57:26,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655412025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:26,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:26,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932973884] [2022-11-20 11:57:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:26,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:26,920 INFO L87 Difference]: Start difference. First operand 561 states and 912 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:35,181 INFO L93 Difference]: Finished difference Result 1325 states and 2201 transitions. [2022-11-20 11:57:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:57:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-20 11:57:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:35,187 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 11:57:35,188 INFO L226 Difference]: Without dead ends: 822 [2022-11-20 11:57:35,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:35,192 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1521 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:35,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 1844 Invalid, 3281 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-20 11:57:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-20 11:57:35,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 561. [2022-11-20 11:57:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 441 states have (on average 1.6326530612244898) internal successors, (720), 460 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 907 transitions. [2022-11-20 11:57:35,400 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 907 transitions. Word has length 112 [2022-11-20 11:57:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:35,400 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 907 transitions. [2022-11-20 11:57:35,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 907 transitions. [2022-11-20 11:57:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:57:35,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:35,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:57:35,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash -359403905, now seen corresponding path program 1 times [2022-11-20 11:57:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534670215] [2022-11-20 11:57:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:35,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:57:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,076 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 11:57:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:36,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534670215] [2022-11-20 11:57:36,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534670215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:36,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:36,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475709556] [2022-11-20 11:57:36,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:36,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:36,079 INFO L87 Difference]: Start difference. First operand 561 states and 907 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:44,400 INFO L93 Difference]: Finished difference Result 1340 states and 2216 transitions. [2022-11-20 11:57:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:57:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-20 11:57:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:44,407 INFO L225 Difference]: With dead ends: 1340 [2022-11-20 11:57:44,407 INFO L226 Difference]: Without dead ends: 843 [2022-11-20 11:57:44,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:57:44,410 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1507 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 2777 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:44,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1828 Invalid, 3188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 2777 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:57:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-20 11:57:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 563. [2022-11-20 11:57:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 462 states have internal predecessors, (722), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 909 transitions. [2022-11-20 11:57:44,606 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 909 transitions. Word has length 112 [2022-11-20 11:57:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:44,607 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 909 transitions. [2022-11-20 11:57:44,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 909 transitions. [2022-11-20 11:57:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:57:44,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:44,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:57:44,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1668161421, now seen corresponding path program 1 times [2022-11-20 11:57:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:44,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867765718] [2022-11-20 11:57:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:57:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:45,298 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 11:57:45,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:45,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867765718] [2022-11-20 11:57:45,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867765718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:45,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:45,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832785268] [2022-11-20 11:57:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:45,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:45,301 INFO L87 Difference]: Start difference. First operand 563 states and 909 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:52,873 INFO L93 Difference]: Finished difference Result 1331 states and 2202 transitions. [2022-11-20 11:57:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:57:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-20 11:57:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:52,881 INFO L225 Difference]: With dead ends: 1331 [2022-11-20 11:57:52,881 INFO L226 Difference]: Without dead ends: 826 [2022-11-20 11:57:52,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:57:52,885 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1941 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:52,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 1789 Invalid, 3248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [559 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 11:57:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-20 11:57:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 563. [2022-11-20 11:57:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 443 states have (on average 1.618510158013544) internal successors, (717), 462 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:57:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 904 transitions. [2022-11-20 11:57:53,155 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 904 transitions. Word has length 113 [2022-11-20 11:57:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:53,156 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 904 transitions. [2022-11-20 11:57:53,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:57:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 904 transitions. [2022-11-20 11:57:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:57:53,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:53,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:53,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:57:53,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720560, now seen corresponding path program 1 times [2022-11-20 11:57:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:53,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900230808] [2022-11-20 11:57:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:57:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:57:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:57:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:57:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:57:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:57:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:57:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:53,833 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 11:57:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:53,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900230808] [2022-11-20 11:57:53,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900230808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:53,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:53,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:57:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077729326] [2022-11-20 11:57:53,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:57:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:57:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:57:53,837 INFO L87 Difference]: Start difference. First operand 563 states and 904 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:02,130 INFO L93 Difference]: Finished difference Result 1344 states and 2213 transitions. [2022-11-20 11:58:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:58:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-20 11:58:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:02,136 INFO L225 Difference]: With dead ends: 1344 [2022-11-20 11:58:02,136 INFO L226 Difference]: Without dead ends: 847 [2022-11-20 11:58:02,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:58:02,138 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1508 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:02,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1825 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 11:58:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-20 11:58:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 566. [2022-11-20 11:58:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 446 states have (on average 1.6143497757847534) internal successors, (720), 465 states have internal predecessors, (720), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:58:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 907 transitions. [2022-11-20 11:58:02,368 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 907 transitions. Word has length 113 [2022-11-20 11:58:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:02,368 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 907 transitions. [2022-11-20 11:58:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 907 transitions. [2022-11-20 11:58:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:58:02,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:02,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:02,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:58:02,374 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1600006979, now seen corresponding path program 1 times [2022-11-20 11:58:02,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:02,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763735036] [2022-11-20 11:58:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:02,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:02,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:58:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:58:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:58:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:03,103 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 11:58:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763735036] [2022-11-20 11:58:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763735036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:03,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:03,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:58:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460180567] [2022-11-20 11:58:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:58:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:58:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:03,106 INFO L87 Difference]: Start difference. First operand 566 states and 907 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:58:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:13,038 INFO L93 Difference]: Finished difference Result 1348 states and 2219 transitions. [2022-11-20 11:58:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:58:13,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-11-20 11:58:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:13,047 INFO L225 Difference]: With dead ends: 1348 [2022-11-20 11:58:13,047 INFO L226 Difference]: Without dead ends: 854 [2022-11-20 11:58:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:58:13,053 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1937 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 5131 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 5694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 3264 Invalid, 5694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 5131 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 11:58:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-20 11:58:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 577. [2022-11-20 11:58:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 454 states have (on average 1.6101321585903083) internal successors, (731), 475 states have internal predecessors, (731), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:58:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 922 transitions. [2022-11-20 11:58:13,313 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 922 transitions. Word has length 114 [2022-11-20 11:58:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:13,313 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 922 transitions. [2022-11-20 11:58:13,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:58:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 922 transitions. [2022-11-20 11:58:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:58:13,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:13,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:13,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:58:13,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -461208220, now seen corresponding path program 1 times [2022-11-20 11:58:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:13,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710914009] [2022-11-20 11:58:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:58:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:58:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:58:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,972 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 11:58:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710914009] [2022-11-20 11:58:13,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710914009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:13,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:13,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321838213] [2022-11-20 11:58:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:13,977 INFO L87 Difference]: Start difference. First operand 577 states and 922 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:22,232 INFO L93 Difference]: Finished difference Result 1371 states and 2250 transitions. [2022-11-20 11:58:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:58:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-20 11:58:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:22,238 INFO L225 Difference]: With dead ends: 1371 [2022-11-20 11:58:22,238 INFO L226 Difference]: Without dead ends: 871 [2022-11-20 11:58:22,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:58:22,241 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1937 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:22,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 1768 Invalid, 3261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 11:58:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-20 11:58:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 581. [2022-11-20 11:58:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 458 states have (on average 1.6026200873362446) internal successors, (734), 479 states have internal predecessors, (734), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:58:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 925 transitions. [2022-11-20 11:58:22,481 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 925 transitions. Word has length 114 [2022-11-20 11:58:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:22,482 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 925 transitions. [2022-11-20 11:58:22,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 925 transitions. [2022-11-20 11:58:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:58:22,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:22,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:22,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:58:22,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1894424764, now seen corresponding path program 1 times [2022-11-20 11:58:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:22,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866507454] [2022-11-20 11:58:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:58:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:58:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:58:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:23,106 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 11:58:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:23,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866507454] [2022-11-20 11:58:23,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866507454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:23,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:23,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820635895] [2022-11-20 11:58:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:23,109 INFO L87 Difference]: Start difference. First operand 581 states and 925 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:30,974 INFO L93 Difference]: Finished difference Result 1413 states and 2293 transitions. [2022-11-20 11:58:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:58:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-20 11:58:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:30,979 INFO L225 Difference]: With dead ends: 1413 [2022-11-20 11:58:30,979 INFO L226 Difference]: Without dead ends: 830 [2022-11-20 11:58:30,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:58:30,983 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1846 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:30,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 1760 Invalid, 3293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [567 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 11:58:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-20 11:58:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 562. [2022-11-20 11:58:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 461 states have internal predecessors, (712), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:58:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 899 transitions. [2022-11-20 11:58:31,200 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 899 transitions. Word has length 114 [2022-11-20 11:58:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:31,200 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 899 transitions. [2022-11-20 11:58:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 899 transitions. [2022-11-20 11:58:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 11:58:31,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:31,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:31,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:58:31,206 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1056100469, now seen corresponding path program 1 times [2022-11-20 11:58:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:31,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094632459] [2022-11-20 11:58:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:31,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:58:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:58:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:58:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:31,858 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 11:58:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:31,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094632459] [2022-11-20 11:58:31,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094632459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:31,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:31,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:58:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348468461] [2022-11-20 11:58:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:58:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:58:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:58:31,861 INFO L87 Difference]: Start difference. First operand 562 states and 899 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:39,981 INFO L93 Difference]: Finished difference Result 1348 states and 2208 transitions. [2022-11-20 11:58:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:58:39,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-20 11:58:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:39,988 INFO L225 Difference]: With dead ends: 1348 [2022-11-20 11:58:39,988 INFO L226 Difference]: Without dead ends: 851 [2022-11-20 11:58:39,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:58:39,992 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1895 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:39,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 1763 Invalid, 3247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [573 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 11:58:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-20 11:58:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 567. [2022-11-20 11:58:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 447 states have (on average 1.604026845637584) internal successors, (717), 466 states have internal predecessors, (717), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:58:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 904 transitions. [2022-11-20 11:58:40,248 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 904 transitions. Word has length 115 [2022-11-20 11:58:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:40,249 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 904 transitions. [2022-11-20 11:58:40,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:58:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 904 transitions. [2022-11-20 11:58:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 11:58:40,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:40,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:58:40,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1773056601, now seen corresponding path program 1 times [2022-11-20 11:58:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:40,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866373726] [2022-11-20 11:58:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:58:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:58:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:58:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:58:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:58:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,411 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 11:58:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:41,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866373726] [2022-11-20 11:58:41,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866373726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:41,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:41,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:58:41,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077713537] [2022-11-20 11:58:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:41,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:58:41,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:41,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:58:41,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:58:41,415 INFO L87 Difference]: Start difference. First operand 567 states and 904 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:58:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:58,872 INFO L93 Difference]: Finished difference Result 1601 states and 2735 transitions. [2022-11-20 11:58:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:58:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-11-20 11:58:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:58,882 INFO L225 Difference]: With dead ends: 1601 [2022-11-20 11:58:58,882 INFO L226 Difference]: Without dead ends: 1112 [2022-11-20 11:58:58,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:58:58,888 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 3985 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 10175 mSolverCounterSat, 1974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3985 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 12149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1974 IncrementalHoareTripleChecker+Valid, 10175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:58,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3985 Valid, 4129 Invalid, 12149 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1974 Valid, 10175 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-20 11:58:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-20 11:58:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 576. [2022-11-20 11:58:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 454 states have (on average 1.5947136563876652) internal successors, (724), 472 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 25 states have return successors, (110), 92 states have call predecessors, (110), 91 states have call successors, (110) [2022-11-20 11:58:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 930 transitions. [2022-11-20 11:58:59,136 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 930 transitions. Word has length 116 [2022-11-20 11:58:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:59,137 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 930 transitions. [2022-11-20 11:58:59,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:58:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 930 transitions. [2022-11-20 11:58:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:58:59,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:59,142 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, 1, 1, 1, 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 11:58:59,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:58:59,143 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash 673454971, now seen corresponding path program 1 times [2022-11-20 11:58:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:59,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424736775] [2022-11-20 11:58:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:58:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:58:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:58:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:58:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:58:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:58:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:59:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:59:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:59:00,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424736775] [2022-11-20 11:59:00,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424736775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225125671] [2022-11-20 11:59:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:00,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:00,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:59:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:00,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:59:00,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:59:00,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225125671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:00,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-11-20 11:59:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211416973] [2022-11-20 11:59:00,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:59:00,732 INFO L87 Difference]: Start difference. First operand 576 states and 930 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:59:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:01,831 INFO L93 Difference]: Finished difference Result 1084 states and 1812 transitions. [2022-11-20 11:59:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:01,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-20 11:59:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:01,839 INFO L225 Difference]: With dead ends: 1084 [2022-11-20 11:59:01,843 INFO L226 Difference]: Without dead ends: 586 [2022-11-20 11:59:01,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:01,863 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 850 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:01,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2241 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:59:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-20 11:59:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2022-11-20 11:59:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 461 states have (on average 1.596529284164859) internal successors, (736), 479 states have internal predecessors, (736), 96 states have call successors, (96), 25 states have call predecessors, (96), 26 states have return successors, (105), 92 states have call predecessors, (105), 91 states have call successors, (105) [2022-11-20 11:59:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 937 transitions. [2022-11-20 11:59:02,159 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 937 transitions. Word has length 117 [2022-11-20 11:59:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:02,160 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 937 transitions. [2022-11-20 11:59:02,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:59:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 937 transitions. [2022-11-20 11:59:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:59:02,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:02,164 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, 1, 1, 1, 1, 1, 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 11:59:02,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:02,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:59:02,374 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1086742324, now seen corresponding path program 1 times [2022-11-20 11:59:02,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:02,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317557004] [2022-11-20 11:59:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:02,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:59:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:59:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:59:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:59:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:59:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:59:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:03,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317557004] [2022-11-20 11:59:03,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317557004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:03,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085432215] [2022-11-20 11:59:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:03,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:03,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:03,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:59:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:03,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:59:03,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:59:03,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085432215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:03,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:03,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-11-20 11:59:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702833086] [2022-11-20 11:59:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:59:03,886 INFO L87 Difference]: Start difference. First operand 584 states and 937 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:59:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:04,813 INFO L93 Difference]: Finished difference Result 1100 states and 1810 transitions. [2022-11-20 11:59:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-20 11:59:04,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:04,820 INFO L225 Difference]: With dead ends: 1100 [2022-11-20 11:59:04,821 INFO L226 Difference]: Without dead ends: 594 [2022-11-20 11:59:04,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:59:04,824 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 837 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:04,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2241 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:59:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-20 11:59:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2022-11-20 11:59:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 469 states have (on average 1.5970149253731343) internal successors, (749), 488 states have internal predecessors, (749), 96 states have call successors, (96), 26 states have call predecessors, (96), 28 states have return successors, (106), 92 states have call predecessors, (106), 91 states have call successors, (106) [2022-11-20 11:59:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 951 transitions. [2022-11-20 11:59:05,159 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 951 transitions. Word has length 122 [2022-11-20 11:59:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:05,160 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 951 transitions. [2022-11-20 11:59:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:59:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 951 transitions. [2022-11-20 11:59:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:59:05,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:05,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:05,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:05,375 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -195960905, now seen corresponding path program 1 times [2022-11-20 11:59:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797998780] [2022-11-20 11:59:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:05,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:59:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:59:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:59:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:59:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:59:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:59:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:06,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797998780] [2022-11-20 11:59:06,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797998780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:06,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:06,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:59:06,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008286611] [2022-11-20 11:59:06,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:06,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:59:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:59:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:59:06,385 INFO L87 Difference]: Start difference. First operand 594 states and 951 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:59:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:40,483 INFO L93 Difference]: Finished difference Result 2633 states and 4593 transitions. [2022-11-20 11:59:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:59:40,484 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 122 [2022-11-20 11:59:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:40,511 INFO L225 Difference]: With dead ends: 2633 [2022-11-20 11:59:40,511 INFO L226 Difference]: Without dead ends: 2117 [2022-11-20 11:59:40,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:59:40,519 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 7453 mSDsluCounter, 7933 mSDsCounter, 0 mSdLazyCounter, 19810 mSolverCounterSat, 3807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7453 SdHoareTripleChecker+Valid, 9188 SdHoareTripleChecker+Invalid, 23617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3807 IncrementalHoareTripleChecker+Valid, 19810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:40,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7453 Valid, 9188 Invalid, 23617 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3807 Valid, 19810 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2022-11-20 11:59:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2022-11-20 11:59:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1406. [2022-11-20 11:59:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1036 states have (on average 1.6042471042471043) internal successors, (1662), 1097 states have internal predecessors, (1662), 305 states have call successors, (305), 48 states have call predecessors, (305), 64 states have return successors, (405), 308 states have call predecessors, (405), 300 states have call successors, (405) [2022-11-20 11:59:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2372 transitions. [2022-11-20 11:59:41,550 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2372 transitions. Word has length 122 [2022-11-20 11:59:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:41,551 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2372 transitions. [2022-11-20 11:59:41,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:59:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2372 transitions. [2022-11-20 11:59:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:59:41,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:41,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:59:41,560 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1421832665, now seen corresponding path program 1 times [2022-11-20 11:59:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:41,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731322120] [2022-11-20 11:59:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:59:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:59:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:59:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:59:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:59:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:59:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:59:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:59:42,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:42,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731322120] [2022-11-20 11:59:42,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731322120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:42,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:42,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 11:59:42,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454798940] [2022-11-20 11:59:42,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:42,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:59:42,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:42,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:59:42,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:42,799 INFO L87 Difference]: Start difference. First operand 1406 states and 2372 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 12:00:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:20,657 INFO L93 Difference]: Finished difference Result 5239 states and 9599 transitions. [2022-11-20 12:00:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:00:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-11-20 12:00:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:20,700 INFO L225 Difference]: With dead ends: 5239 [2022-11-20 12:00:20,700 INFO L226 Difference]: Without dead ends: 3919 [2022-11-20 12:00:20,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:00:20,718 INFO L413 NwaCegarLoop]: 1402 mSDtfsCounter, 6411 mSDsluCounter, 8957 mSDsCounter, 0 mSdLazyCounter, 21839 mSolverCounterSat, 3334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6417 SdHoareTripleChecker+Valid, 10359 SdHoareTripleChecker+Invalid, 25173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3334 IncrementalHoareTripleChecker+Valid, 21839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:20,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6417 Valid, 10359 Invalid, 25173 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3334 Valid, 21839 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2022-11-20 12:00:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-11-20 12:00:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 2172. [2022-11-20 12:00:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1601 states have (on average 1.6108682073703935) internal successors, (2579), 1683 states have internal predecessors, (2579), 473 states have call successors, (473), 70 states have call predecessors, (473), 97 states have return successors, (694), 482 states have call predecessors, (694), 468 states have call successors, (694) [2022-11-20 12:00:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 3746 transitions. [2022-11-20 12:00:22,079 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 3746 transitions. Word has length 124 [2022-11-20 12:00:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:22,079 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 3746 transitions. [2022-11-20 12:00:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 12:00:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 3746 transitions. [2022-11-20 12:00:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 12:00:22,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:22,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:22,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:00:22,092 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:22,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1750775653, now seen corresponding path program 1 times [2022-11-20 12:00:22,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:22,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34073190] [2022-11-20 12:00:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:00:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:00:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:00:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:00:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:00:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:00:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:00:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:00:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:22,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34073190] [2022-11-20 12:00:22,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34073190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:22,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:22,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:00:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536540862] [2022-11-20 12:00:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:22,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:00:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:00:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:00:22,741 INFO L87 Difference]: Start difference. First operand 2172 states and 3746 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:00:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:32,630 INFO L93 Difference]: Finished difference Result 4299 states and 7543 transitions. [2022-11-20 12:00:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:00:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-20 12:00:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:32,653 INFO L225 Difference]: With dead ends: 4299 [2022-11-20 12:00:32,653 INFO L226 Difference]: Without dead ends: 2937 [2022-11-20 12:00:32,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:00:32,664 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1441 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:32,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1895 Invalid, 3134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 12:00:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-11-20 12:00:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2178. [2022-11-20 12:00:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 1607 states have (on average 1.6085874299937772) internal successors, (2585), 1689 states have internal predecessors, (2585), 473 states have call successors, (473), 70 states have call predecessors, (473), 97 states have return successors, (694), 482 states have call predecessors, (694), 468 states have call successors, (694) [2022-11-20 12:00:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 3752 transitions. [2022-11-20 12:00:34,516 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 3752 transitions. Word has length 123 [2022-11-20 12:00:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 2178 states and 3752 transitions. [2022-11-20 12:00:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 12:00:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 3752 transitions. [2022-11-20 12:00:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 12:00:34,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:34,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:00:34,527 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash -212218794, now seen corresponding path program 1 times [2022-11-20 12:00:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:34,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891940458] [2022-11-20 12:00:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:00:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:00:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:00:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:00:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:00:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:00:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:00:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:00:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:35,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891940458] [2022-11-20 12:00:35,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891940458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:35,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:35,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:00:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321715265] [2022-11-20 12:00:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:00:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:00:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:00:35,229 INFO L87 Difference]: Start difference. First operand 2178 states and 3752 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:00:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:45,981 INFO L93 Difference]: Finished difference Result 3559 states and 6231 transitions. [2022-11-20 12:00:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:00:45,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-11-20 12:00:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:45,999 INFO L225 Difference]: With dead ends: 3559 [2022-11-20 12:00:45,999 INFO L226 Difference]: Without dead ends: 2069 [2022-11-20 12:00:46,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:00:46,014 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1850 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 5577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:46,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 3365 Invalid, 5577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [532 Valid, 5045 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 12:00:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-20 12:00:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1208. [2022-11-20 12:00:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 926 states have (on average 1.6198704103671706) internal successors, (1500), 969 states have internal predecessors, (1500), 223 states have call successors, (223), 48 states have call predecessors, (223), 58 states have return successors, (265), 221 states have call predecessors, (265), 218 states have call successors, (265) [2022-11-20 12:00:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1988 transitions. [2022-11-20 12:00:46,724 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1988 transitions. Word has length 127 [2022-11-20 12:00:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:46,725 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1988 transitions. [2022-11-20 12:00:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:00:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1988 transitions. [2022-11-20 12:00:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 12:00:46,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:46,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:00:46,731 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1142854318, now seen corresponding path program 1 times [2022-11-20 12:00:46,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:46,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208602197] [2022-11-20 12:00:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:00:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:00:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:00:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:00:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:00:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:00:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:00:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:00:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:00:47,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:47,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208602197] [2022-11-20 12:00:47,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208602197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:47,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:47,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:00:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010261802] [2022-11-20 12:00:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:00:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:00:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:00:47,577 INFO L87 Difference]: Start difference. First operand 1208 states and 1988 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:00:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:59,886 INFO L93 Difference]: Finished difference Result 3382 states and 5854 transitions. [2022-11-20 12:00:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:00:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-11-20 12:00:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:59,900 INFO L225 Difference]: With dead ends: 3382 [2022-11-20 12:00:59,900 INFO L226 Difference]: Without dead ends: 2256 [2022-11-20 12:00:59,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:00:59,905 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 2397 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 4726 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2408 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 5953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 4726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:59,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2408 Valid, 3672 Invalid, 5953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1227 Valid, 4726 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-20 12:00:59,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-11-20 12:01:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 1218. [2022-11-20 12:01:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 934 states have (on average 1.614561027837259) internal successors, (1508), 977 states have internal predecessors, (1508), 223 states have call successors, (223), 48 states have call predecessors, (223), 60 states have return successors, (268), 223 states have call predecessors, (268), 218 states have call successors, (268) [2022-11-20 12:01:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1999 transitions. [2022-11-20 12:01:00,655 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1999 transitions. Word has length 128 [2022-11-20 12:01:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:00,656 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1999 transitions. [2022-11-20 12:01:00,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:01:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1999 transitions. [2022-11-20 12:01:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 12:01:00,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:00,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:00,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:01:00,661 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2140840473, now seen corresponding path program 1 times [2022-11-20 12:01:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706394153] [2022-11-20 12:01:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:01:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:01:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:01:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:01:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:01:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:01:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:01,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706394153] [2022-11-20 12:01:01,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706394153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:01,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:01,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:01:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42729099] [2022-11-20 12:01:01,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:01,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:01,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:01,252 INFO L87 Difference]: Start difference. First operand 1218 states and 1999 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:01:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:10,376 INFO L93 Difference]: Finished difference Result 2007 states and 3326 transitions. [2022-11-20 12:01:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:01:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 129 [2022-11-20 12:01:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:10,380 INFO L225 Difference]: With dead ends: 2007 [2022-11-20 12:01:10,380 INFO L226 Difference]: Without dead ends: 833 [2022-11-20 12:01:10,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:01:10,383 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1392 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 5517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:10,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 3232 Invalid, 5517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 5117 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 12:01:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-20 12:01:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 568. [2022-11-20 12:01:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6076233183856503) internal successors, (717), 467 states have internal predecessors, (717), 93 states have call successors, (93), 26 states have call predecessors, (93), 28 states have return successors, (100), 87 states have call predecessors, (100), 88 states have call successors, (100) [2022-11-20 12:01:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 910 transitions. [2022-11-20 12:01:10,603 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 910 transitions. Word has length 129 [2022-11-20 12:01:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:10,603 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 910 transitions. [2022-11-20 12:01:10,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 12:01:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 910 transitions. [2022-11-20 12:01:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 12:01:10,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:10,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:10,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:01:10,606 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash -79410004, now seen corresponding path program 1 times [2022-11-20 12:01:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:10,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119725004] [2022-11-20 12:01:10,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:01:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:01:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:01:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:01:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:01:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:01:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:11,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119725004] [2022-11-20 12:01:11,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119725004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:11,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:11,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:01:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837796846] [2022-11-20 12:01:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:01:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:01:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:11,282 INFO L87 Difference]: Start difference. First operand 568 states and 910 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:01:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:20,770 INFO L93 Difference]: Finished difference Result 1378 states and 2291 transitions. [2022-11-20 12:01:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:01:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2022-11-20 12:01:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:20,776 INFO L225 Difference]: With dead ends: 1378 [2022-11-20 12:01:20,776 INFO L226 Difference]: Without dead ends: 871 [2022-11-20 12:01:20,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:01:20,778 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2209 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 5075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:20,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 2995 Invalid, 5075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [806 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 12:01:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-20 12:01:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 573. [2022-11-20 12:01:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6022222222222222) internal successors, (721), 471 states have internal predecessors, (721), 93 states have call successors, (93), 26 states have call predecessors, (93), 29 states have return successors, (102), 88 states have call predecessors, (102), 88 states have call successors, (102) [2022-11-20 12:01:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 916 transitions. [2022-11-20 12:01:21,033 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 916 transitions. Word has length 131 [2022-11-20 12:01:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:21,033 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 916 transitions. [2022-11-20 12:01:21,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 12:01:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 916 transitions. [2022-11-20 12:01:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 12:01:21,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:21,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:01:21,037 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 336109589, now seen corresponding path program 1 times [2022-11-20 12:01:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186445952] [2022-11-20 12:01:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:01:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:01:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:01:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:01:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:01:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:01:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:21,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186445952] [2022-11-20 12:01:21,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186445952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:21,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684190840] [2022-11-20 12:01:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:21,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:21,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:01:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:22,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:01:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:01:22,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:01:22,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684190840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:22,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:01:22,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-11-20 12:01:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257389420] [2022-11-20 12:01:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:01:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:01:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:22,076 INFO L87 Difference]: Start difference. First operand 573 states and 916 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:01:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:22,795 INFO L93 Difference]: Finished difference Result 1555 states and 2554 transitions. [2022-11-20 12:01:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:01:22,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2022-11-20 12:01:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:22,800 INFO L225 Difference]: With dead ends: 1555 [2022-11-20 12:01:22,801 INFO L226 Difference]: Without dead ends: 1043 [2022-11-20 12:01:22,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:01:22,803 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 790 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:22,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1739 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:01:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-20 12:01:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1028. [2022-11-20 12:01:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 804 states have (on average 1.6044776119402986) internal successors, (1290), 841 states have internal predecessors, (1290), 169 states have call successors, (169), 47 states have call predecessors, (169), 54 states have return successors, (200), 165 states have call predecessors, (200), 164 states have call successors, (200) [2022-11-20 12:01:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1659 transitions. [2022-11-20 12:01:23,241 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1659 transitions. Word has length 135 [2022-11-20 12:01:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:23,242 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1659 transitions. [2022-11-20 12:01:23,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 12:01:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1659 transitions. [2022-11-20 12:01:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 12:01:23,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:23,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:23,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:01:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:01:23,445 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 503231015, now seen corresponding path program 1 times [2022-11-20 12:01:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036132345] [2022-11-20 12:01:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:01:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:01:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:01:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:01:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:01:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:01:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:01:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:24,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036132345] [2022-11-20 12:01:24,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036132345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:24,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:24,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:01:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318513238] [2022-11-20 12:01:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:01:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:01:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:01:24,053 INFO L87 Difference]: Start difference. First operand 1028 states and 1659 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:01:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:37,443 INFO L93 Difference]: Finished difference Result 3591 states and 6092 transitions. [2022-11-20 12:01:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:01:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-11-20 12:01:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:37,462 INFO L225 Difference]: With dead ends: 3591 [2022-11-20 12:01:37,462 INFO L226 Difference]: Without dead ends: 2624 [2022-11-20 12:01:37,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:01:37,468 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 4644 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 1771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 4006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1771 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 1141 Invalid, 4006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1771 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-20 12:01:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2022-11-20 12:01:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1992. [2022-11-20 12:01:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1550 states have (on average 1.6116129032258064) internal successors, (2498), 1618 states have internal predecessors, (2498), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-11-20 12:01:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3256 transitions. [2022-11-20 12:01:38,443 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3256 transitions. Word has length 140 [2022-11-20 12:01:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:38,443 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 3256 transitions. [2022-11-20 12:01:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:01:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3256 transitions. [2022-11-20 12:01:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 12:01:38,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:38,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 12:01:38,445 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1515751401, now seen corresponding path program 1 times [2022-11-20 12:01:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:38,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843077087] [2022-11-20 12:01:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:01:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:01:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:01:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:01:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:01:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:01:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:01:39,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:39,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843077087] [2022-11-20 12:01:39,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843077087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:39,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:39,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:01:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199657393] [2022-11-20 12:01:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:01:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:01:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:01:39,252 INFO L87 Difference]: Start difference. First operand 1992 states and 3256 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 12:01:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:50,296 INFO L93 Difference]: Finished difference Result 4346 states and 7367 transitions. [2022-11-20 12:01:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:01:50,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 143 [2022-11-20 12:01:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:50,311 INFO L225 Difference]: With dead ends: 4346 [2022-11-20 12:01:50,311 INFO L226 Difference]: Without dead ends: 2607 [2022-11-20 12:01:50,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:01:50,317 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 2997 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 5259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:50,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 3183 Invalid, 5259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [868 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 12:01:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2022-11-20 12:01:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 1992. [2022-11-20 12:01:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1550 states have (on average 1.6006451612903225) internal successors, (2481), 1618 states have internal predecessors, (2481), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-11-20 12:01:51,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3239 transitions. [2022-11-20 12:01:51,381 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3239 transitions. Word has length 143 [2022-11-20 12:01:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:51,382 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 3239 transitions. [2022-11-20 12:01:51,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 12:01:51,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3239 transitions. [2022-11-20 12:01:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 12:01:51,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:51,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:51,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 12:01:51,386 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -139734721, now seen corresponding path program 1 times [2022-11-20 12:01:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:51,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901838606] [2022-11-20 12:01:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:01:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:01:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:01:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:01:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:01:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:01:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:01:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:01:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:01:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:01:51,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:51,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901838606] [2022-11-20 12:01:51,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901838606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:01:51,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:01:51,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:01:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85282329] [2022-11-20 12:01:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:01:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:01:51,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:01:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:01:51,992 INFO L87 Difference]: Start difference. First operand 1992 states and 3239 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:02:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:00,639 INFO L93 Difference]: Finished difference Result 4553 states and 7708 transitions. [2022-11-20 12:02:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:02:00,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 147 [2022-11-20 12:02:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:00,654 INFO L225 Difference]: With dead ends: 4553 [2022-11-20 12:02:00,655 INFO L226 Difference]: Without dead ends: 2623 [2022-11-20 12:02:00,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:02:00,663 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 2147 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:00,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 1745 Invalid, 3454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [785 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 12:02:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-11-20 12:02:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2008. [2022-11-20 12:02:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1562 states have (on average 1.5960307298335468) internal successors, (2493), 1630 states have internal predecessors, (2493), 336 states have call successors, (336), 93 states have call predecessors, (336), 109 states have return successors, (420), 332 states have call predecessors, (420), 331 states have call successors, (420) [2022-11-20 12:02:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3249 transitions. [2022-11-20 12:02:01,935 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3249 transitions. Word has length 147 [2022-11-20 12:02:01,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:01,936 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 3249 transitions. [2022-11-20 12:02:01,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:02:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3249 transitions. [2022-11-20 12:02:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 12:02:01,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:01,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:01,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 12:02:01,938 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:01,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash 575791653, now seen corresponding path program 1 times [2022-11-20 12:02:01,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:01,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892171503] [2022-11-20 12:02:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:01,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:02:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:02:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:02:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:02:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:02:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:02:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:02:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:02:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:02:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 12:02:02,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:02,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892171503] [2022-11-20 12:02:02,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892171503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:02,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:02,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:02:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529860360] [2022-11-20 12:02:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:02:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:02:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:02:02,613 INFO L87 Difference]: Start difference. First operand 2008 states and 3249 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 12:02:22,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:22,246 INFO L93 Difference]: Finished difference Result 5312 states and 8976 transitions. [2022-11-20 12:02:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:02:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 148 [2022-11-20 12:02:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:22,265 INFO L225 Difference]: With dead ends: 5312 [2022-11-20 12:02:22,265 INFO L226 Difference]: Without dead ends: 3704 [2022-11-20 12:02:22,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:02:22,273 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 4690 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 7156 mSolverCounterSat, 1643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 8799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1643 IncrementalHoareTripleChecker+Valid, 7156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:22,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 3432 Invalid, 8799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1643 Valid, 7156 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-20 12:02:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2022-11-20 12:02:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 2839. [2022-11-20 12:02:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2218 states have (on average 1.5721370604147882) internal successors, (3487), 2311 states have internal predecessors, (3487), 450 states have call successors, (450), 143 states have call predecessors, (450), 170 states have return successors, (590), 444 states have call predecessors, (590), 445 states have call successors, (590) [2022-11-20 12:02:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4527 transitions. [2022-11-20 12:02:23,717 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4527 transitions. Word has length 148 [2022-11-20 12:02:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:23,717 INFO L495 AbstractCegarLoop]: Abstraction has 2839 states and 4527 transitions. [2022-11-20 12:02:23,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 12:02:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4527 transitions. [2022-11-20 12:02:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:02:23,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:23,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 12:02:23,721 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1364742406, now seen corresponding path program 1 times [2022-11-20 12:02:23,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:23,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455888296] [2022-11-20 12:02:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:23,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:02:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:02:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:02:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:02:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:02:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:02:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:02:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:02:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:02:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:02:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455888296] [2022-11-20 12:02:24,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455888296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:24,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:24,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:02:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468725639] [2022-11-20 12:02:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:02:24,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:02:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:02:24,296 INFO L87 Difference]: Start difference. First operand 2839 states and 4527 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 12:02:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:40,366 INFO L93 Difference]: Finished difference Result 8025 states and 13272 transitions. [2022-11-20 12:02:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:02:40,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-11-20 12:02:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:40,389 INFO L225 Difference]: With dead ends: 8025 [2022-11-20 12:02:40,389 INFO L226 Difference]: Without dead ends: 5586 [2022-11-20 12:02:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:02:40,399 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2667 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 3322 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 4600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 3322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2679 Valid, 1778 Invalid, 4600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1278 Valid, 3322 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-20 12:02:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2022-11-20 12:02:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4381. [2022-11-20 12:02:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 3444 states have (on average 1.562137049941928) internal successors, (5380), 3569 states have internal predecessors, (5380), 667 states have call successors, (667), 227 states have call predecessors, (667), 269 states have return successors, (873), 668 states have call predecessors, (873), 662 states have call successors, (873) [2022-11-20 12:02:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 6920 transitions. [2022-11-20 12:02:42,799 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 6920 transitions. Word has length 153 [2022-11-20 12:02:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:42,800 INFO L495 AbstractCegarLoop]: Abstraction has 4381 states and 6920 transitions. [2022-11-20 12:02:42,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 12:02:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 6920 transitions. [2022-11-20 12:02:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:02:42,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:42,803 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:42,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 12:02:42,804 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:42,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash 558485628, now seen corresponding path program 1 times [2022-11-20 12:02:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:42,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282008397] [2022-11-20 12:02:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:42,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:02:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:02:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:02:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:02:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 12:02:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:02:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 12:02:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:02:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:02:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:02:43,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:43,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282008397] [2022-11-20 12:02:43,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282008397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:02:43,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561341312] [2022-11-20 12:02:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:43,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:43,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:02:43,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:02:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:02:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:02:43,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:02:43,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561341312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:43,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:02:43,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 12:02:43,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399452276] [2022-11-20 12:02:43,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:02:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:43,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:02:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:02:43,971 INFO L87 Difference]: Start difference. First operand 4381 states and 6920 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:02:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:46,690 INFO L93 Difference]: Finished difference Result 8823 states and 14177 transitions. [2022-11-20 12:02:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:02:46,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-11-20 12:02:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:46,708 INFO L225 Difference]: With dead ends: 8823 [2022-11-20 12:02:46,709 INFO L226 Difference]: Without dead ends: 4501 [2022-11-20 12:02:46,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:02:46,724 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 805 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:46,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2139 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:02:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2022-11-20 12:02:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4501. [2022-11-20 12:02:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4501 states, 3549 states have (on average 1.5655114116652578) internal successors, (5556), 3674 states have internal predecessors, (5556), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 12:02:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 7103 transitions. [2022-11-20 12:02:49,443 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 7103 transitions. Word has length 153 [2022-11-20 12:02:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:49,444 INFO L495 AbstractCegarLoop]: Abstraction has 4501 states and 7103 transitions. [2022-11-20 12:02:49,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:02:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 7103 transitions. [2022-11-20 12:02:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-20 12:02:49,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:49,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:49,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:02:49,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:49,655 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:02:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:49,656 INFO L85 PathProgramCache]: Analyzing trace with hash 866707024, now seen corresponding path program 1 times [2022-11-20 12:02:49,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:49,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496925409] [2022-11-20 12:02:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:02:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:02:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:02:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:02:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:02:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:02:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:02:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:02:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:02:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:02:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 12:02:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:50,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496925409] [2022-11-20 12:02:50,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496925409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:50,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:50,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:02:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128858671] [2022-11-20 12:02:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:50,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:02:50,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:02:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:02:50,444 INFO L87 Difference]: Start difference. First operand 4501 states and 7103 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 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 12:03:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:03,321 INFO L93 Difference]: Finished difference Result 5802 states and 9592 transitions. [2022-11-20 12:03:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:03:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 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 155 [2022-11-20 12:03:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:03,365 INFO L225 Difference]: With dead ends: 5802 [2022-11-20 12:03:03,365 INFO L226 Difference]: Without dead ends: 5787 [2022-11-20 12:03:03,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:03:03,371 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1977 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 4728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:03,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 2029 Invalid, 4728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [731 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 12:03:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-11-20 12:03:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 4513. [2022-11-20 12:03:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 3561 states have (on average 1.5636057287278855) internal successors, (5568), 3686 states have internal predecessors, (5568), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 12:03:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 7115 transitions. [2022-11-20 12:03:05,872 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 7115 transitions. Word has length 155 [2022-11-20 12:03:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:05,873 INFO L495 AbstractCegarLoop]: Abstraction has 4513 states and 7115 transitions. [2022-11-20 12:03:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 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 12:03:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 7115 transitions. [2022-11-20 12:03:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 12:03:05,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:05,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 12:03:05,877 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 109905931, now seen corresponding path program 1 times [2022-11-20 12:03:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:05,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691418965] [2022-11-20 12:03:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:05,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:03:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:03:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:03:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:03:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:03:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:03:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:03:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:03:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:03:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:03:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:03:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 12:03:06,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:06,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691418965] [2022-11-20 12:03:06,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691418965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:06,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:06,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:03:06,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414733498] [2022-11-20 12:03:06,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:03:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:06,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:03:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:06,628 INFO L87 Difference]: Start difference. First operand 4513 states and 7115 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 12:03:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:17,946 INFO L93 Difference]: Finished difference Result 5655 states and 9316 transitions. [2022-11-20 12:03:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:03:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-11-20 12:03:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:17,967 INFO L225 Difference]: With dead ends: 5655 [2022-11-20 12:03:17,967 INFO L226 Difference]: Without dead ends: 5640 [2022-11-20 12:03:17,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:03:17,971 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1819 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:17,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 2125 Invalid, 3931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [588 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 12:03:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5640 states. [2022-11-20 12:03:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5640 to 4513. [2022-11-20 12:03:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 3561 states have (on average 1.5616399887672001) internal successors, (5561), 3686 states have internal predecessors, (5561), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 12:03:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 7108 transitions. [2022-11-20 12:03:20,452 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 7108 transitions. Word has length 161 [2022-11-20 12:03:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:20,452 INFO L495 AbstractCegarLoop]: Abstraction has 4513 states and 7108 transitions. [2022-11-20 12:03:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 12:03:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 7108 transitions. [2022-11-20 12:03:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 12:03:20,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:20,454 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 12:03:20,455 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash -528497626, now seen corresponding path program 1 times [2022-11-20 12:03:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:20,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061521142] [2022-11-20 12:03:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:03:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:03:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:03:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:03:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:03:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:03:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:03:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:03:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:03:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:03:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:03:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:03:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 12:03:21,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061521142] [2022-11-20 12:03:21,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061521142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:21,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626059288] [2022-11-20 12:03:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:21,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:21,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:21,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:03:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:03:21,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:03:21,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626059288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:21,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:03:21,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-20 12:03:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272509658] [2022-11-20 12:03:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:03:21,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:03:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:03:21,891 INFO L87 Difference]: Start difference. First operand 4513 states and 7108 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 12:03:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:24,605 INFO L93 Difference]: Finished difference Result 4728 states and 7460 transitions. [2022-11-20 12:03:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 172 [2022-11-20 12:03:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:24,622 INFO L225 Difference]: With dead ends: 4728 [2022-11-20 12:03:24,623 INFO L226 Difference]: Without dead ends: 4713 [2022-11-20 12:03:24,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:03:24,626 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 67 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:24,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3500 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:03:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2022-11-20 12:03:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4534. [2022-11-20 12:03:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3582 states have (on average 1.5583472920156338) internal successors, (5582), 3707 states have internal predecessors, (5582), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 12:03:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 7129 transitions. [2022-11-20 12:03:27,259 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 7129 transitions. Word has length 172 [2022-11-20 12:03:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:27,259 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 7129 transitions. [2022-11-20 12:03:27,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 12:03:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 7129 transitions. [2022-11-20 12:03:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 12:03:27,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:27,263 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:27,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:27,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:27,465 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1719955094, now seen corresponding path program 1 times [2022-11-20 12:03:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:27,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658404619] [2022-11-20 12:03:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:03:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:27,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:03:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:03:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:03:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:03:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:03:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:03:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:03:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:03:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:03:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:03:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:03:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:03:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:03:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-20 12:03:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 12:03:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-20 12:03:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-20 12:03:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658404619] [2022-11-20 12:03:28,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658404619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:28,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589721965] [2022-11-20 12:03:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:28,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:28,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:28,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:28,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:03:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:28,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:03:28,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-20 12:03:29,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-20 12:03:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589721965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:03:30,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:03:30,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2022-11-20 12:03:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406888942] [2022-11-20 12:03:30,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:03:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:03:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:03:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:03:30,028 INFO L87 Difference]: Start difference. First operand 4534 states and 7129 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-11-20 12:04:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:23,547 INFO L93 Difference]: Finished difference Result 24123 states and 40266 transitions. [2022-11-20 12:04:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-20 12:04:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) Word has length 215 [2022-11-20 12:04:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:23,724 INFO L225 Difference]: With dead ends: 24123 [2022-11-20 12:04:23,724 INFO L226 Difference]: Without dead ends: 19664 [2022-11-20 12:04:23,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 480 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1260, Invalid=7296, Unknown=0, NotChecked=0, Total=8556 [2022-11-20 12:04:23,755 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 10700 mSDsluCounter, 9946 mSDsCounter, 0 mSdLazyCounter, 22967 mSolverCounterSat, 5017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10711 SdHoareTripleChecker+Valid, 11382 SdHoareTripleChecker+Invalid, 27984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5017 IncrementalHoareTripleChecker+Valid, 22967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10711 Valid, 11382 Invalid, 27984 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5017 Valid, 22967 Invalid, 0 Unknown, 0 Unchecked, 28.9s Time] [2022-11-20 12:04:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19664 states. [2022-11-20 12:04:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19664 to 14884. [2022-11-20 12:04:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14884 states, 11510 states have (on average 1.5493483927019982) internal successors, (17833), 11944 states have internal predecessors, (17833), 2480 states have call successors, (2480), 702 states have call predecessors, (2480), 893 states have return successors, (3614), 2542 states have call predecessors, (3614), 2475 states have call successors, (3614) [2022-11-20 12:04:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14884 states to 14884 states and 23927 transitions. [2022-11-20 12:04:32,943 INFO L78 Accepts]: Start accepts. Automaton has 14884 states and 23927 transitions. Word has length 215 [2022-11-20 12:04:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:04:32,944 INFO L495 AbstractCegarLoop]: Abstraction has 14884 states and 23927 transitions. [2022-11-20 12:04:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 16 states have internal predecessors, (240), 8 states have call successors, (51), 8 states have call predecessors, (51), 12 states have return successors, (50), 12 states have call predecessors, (50), 8 states have call successors, (50) [2022-11-20 12:04:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 14884 states and 23927 transitions. [2022-11-20 12:04:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-20 12:04:32,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:04:32,958 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:32,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 12:04:33,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 12:04:33,166 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:04:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:33,167 INFO L85 PathProgramCache]: Analyzing trace with hash -873486842, now seen corresponding path program 1 times [2022-11-20 12:04:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:33,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645911650] [2022-11-20 12:04:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:33,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:04:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:04:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:04:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:04:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:04:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:04:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:04:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:04:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:04:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:04:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:04:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:04:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:04:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:04:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:04:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:04:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:04:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:04:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:04:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:04:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:04:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:04:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:04:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:04:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-20 12:04:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:34,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645911650] [2022-11-20 12:04:34,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645911650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:34,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995808360] [2022-11-20 12:04:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:34,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:34,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:04:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:35,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:04:35,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-20 12:04:35,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:35,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995808360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:04:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-11-20 12:04:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398551336] [2022-11-20 12:04:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:04:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:04:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:35,112 INFO L87 Difference]: Start difference. First operand 14884 states and 23927 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-20 12:04:53,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:04:53,068 INFO L93 Difference]: Finished difference Result 44316 states and 72141 transitions. [2022-11-20 12:04:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:04:53,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 288 [2022-11-20 12:04:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:04:53,238 INFO L225 Difference]: With dead ends: 44316 [2022-11-20 12:04:53,238 INFO L226 Difference]: Without dead ends: 29501 [2022-11-20 12:04:53,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:04:53,285 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 829 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:04:53,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1804 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:04:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29501 states. [2022-11-20 12:05:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29501 to 29499. [2022-11-20 12:05:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29499 states, 22820 states have (on average 1.5492550394390885) internal successors, (35354), 23691 states have internal predecessors, (35354), 4897 states have call successors, (4897), 1398 states have call predecessors, (4897), 1781 states have return successors, (7705), 5019 states have call predecessors, (7705), 4892 states have call successors, (7705) [2022-11-20 12:05:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29499 states to 29499 states and 47956 transitions. [2022-11-20 12:05:11,027 INFO L78 Accepts]: Start accepts. Automaton has 29499 states and 47956 transitions. Word has length 288 [2022-11-20 12:05:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:11,028 INFO L495 AbstractCegarLoop]: Abstraction has 29499 states and 47956 transitions. [2022-11-20 12:05:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-20 12:05:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 29499 states and 47956 transitions. [2022-11-20 12:05:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-11-20 12:05:11,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:11,046 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:11,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:11,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 12:05:11,263 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:05:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1218474402, now seen corresponding path program 1 times [2022-11-20 12:05:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:11,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349673698] [2022-11-20 12:05:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:05:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:05:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:05:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:05:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:05:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:05:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:05:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:05:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:05:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:05:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:05:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:05:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:05:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:05:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:05:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:05:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 12:05:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:05:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:05:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:05:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:05:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:05:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:05:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-20 12:05:12,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349673698] [2022-11-20 12:05:12,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349673698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238193590] [2022-11-20 12:05:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:12,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:12,276 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:12,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ee3af7-f14e-4d09-ae26-f6f43c92c346/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:05:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:12,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:05:12,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-20 12:05:12,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:12,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238193590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:12,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:12,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2022-11-20 12:05:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260732986] [2022-11-20 12:05:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:05:12,803 INFO L87 Difference]: Start difference. First operand 29499 states and 47956 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)