./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8 --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- 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-2329fc7 [2022-12-13 19:45:22,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:45:22,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:45:22,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:45:22,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:45:22,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:45:22,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:45:22,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:45:22,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:45:22,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:45:22,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:45:22,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:45:22,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:45:22,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:45:22,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:45:22,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:45:22,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:45:22,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:45:22,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:45:22,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:45:22,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:45:22,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:45:22,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:45:22,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:45:22,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:45:22,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:45:22,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:45:22,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:45:22,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:45:22,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:45:22,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:45:22,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:45:22,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:45:22,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:45:22,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:45:22,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:45:22,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:45:22,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:45:22,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:45:22,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:45:22,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:45:22,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:45:22,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:45:22,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:45:22,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:45:22,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:45:22,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:45:22,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:45:22,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:45:22,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:45:22,971 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:45:22,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:45:22,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:45:22,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:45:22,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:45:22,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:45:22,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:45:22,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:45:22,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:45:22,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:45:22,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:45:22,975 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2022-12-13 19:45:23,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:45:23,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:45:23,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:45:23,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:45:23,188 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:45:23,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-12-13 19:45:25,747 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:45:25,968 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:45:25,969 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-12-13 19:45:25,982 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/data/c789ab213/dddcea3938c2441e9ffaf8ae171efda0/FLAGda933393d [2022-12-13 19:45:25,993 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/data/c789ab213/dddcea3938c2441e9ffaf8ae171efda0 [2022-12-13 19:45:25,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:45:25,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:45:25,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:45:25,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:45:25,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:45:26,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:45:25" (1/1) ... [2022-12-13 19:45:26,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fb3574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26, skipping insertion in model container [2022-12-13 19:45:26,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:45:25" (1/1) ... [2022-12-13 19:45:26,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:45:26,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:45:26,352 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_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2022-12-13 19:45:26,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:45:26,384 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:45:26,439 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_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2022-12-13 19:45:26,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:45:26,471 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:45:26,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26 WrapperNode [2022-12-13 19:45:26,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:45:26,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:45:26,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:45:26,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:45:26,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,539 INFO L138 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 894 [2022-12-13 19:45:26,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:45:26,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:45:26,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:45:26,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:45:26,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:45:26,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:45:26,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:45:26,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:45:26,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (1/1) ... [2022-12-13 19:45:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:45:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:26,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:45:26,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:45:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-13 19:45:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-13 19:45:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:45:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-13 19:45:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-13 19:45:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-12-13 19:45:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-12-13 19:45:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 19:45:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 19:45:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-12-13 19:45:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-12-13 19:45:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 19:45:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 19:45:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-13 19:45:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-13 19:45:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 19:45:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 19:45:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-12-13 19:45:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-12-13 19:45:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 19:45:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 19:45:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 19:45:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 19:45:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 19:45:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 19:45:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 19:45:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 19:45:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 19:45:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 19:45:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 19:45:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 19:45:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 19:45:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 19:45:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-13 19:45:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-13 19:45:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 19:45:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 19:45:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 19:45:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 19:45:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 19:45:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 19:45:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 19:45:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 19:45:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 19:45:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 19:45:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:45:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-13 19:45:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-13 19:45:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 19:45:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 19:45:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 19:45:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 19:45:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 19:45:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 19:45:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-12-13 19:45:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-12-13 19:45:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:45:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:45:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 19:45:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 19:45:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-12-13 19:45:26,664 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-12-13 19:45:26,823 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:45:26,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:45:27,660 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:45:27,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:45:27,674 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:45:27,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:45:27 BoogieIcfgContainer [2022-12-13 19:45:27,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:45:27,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:45:27,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:45:27,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:45:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:45:25" (1/3) ... [2022-12-13 19:45:27,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73703ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:45:27, skipping insertion in model container [2022-12-13 19:45:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:45:26" (2/3) ... [2022-12-13 19:45:27,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73703ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:45:27, skipping insertion in model container [2022-12-13 19:45:27,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:45:27" (3/3) ... [2022-12-13 19:45:27,691 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2022-12-13 19:45:27,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:45:27,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:45:27,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:45:27,776 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;@47e51d81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:45:27,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:45:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 487 states have (on average 1.6714579055441479) internal successors, (814), 507 states have internal predecessors, (814), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-12-13 19:45:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 19:45:27,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:27,796 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:27,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1869945943, now seen corresponding path program 1 times [2022-12-13 19:45:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147227749] [2022-12-13 19:45:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:45:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:45:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 19:45:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:45:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 19:45:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 19:45:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 19:45:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147227749] [2022-12-13 19:45:28,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147227749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:28,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414311092] [2022-12-13 19:45:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:28,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:28,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:28,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:28,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:45:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:28,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 19:45:28,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:28,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414311092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:28,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:28,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-13 19:45:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188884579] [2022-12-13 19:45:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:28,968 INFO L87 Difference]: Start difference. First operand has 628 states, 487 states have (on average 1.6714579055441479) internal successors, (814), 507 states have internal predecessors, (814), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:29,147 INFO L93 Difference]: Finished difference Result 1255 states and 2084 transitions. [2022-12-13 19:45:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:45:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-12-13 19:45:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:29,165 INFO L225 Difference]: With dead ends: 1255 [2022-12-13 19:45:29,165 INFO L226 Difference]: Without dead ends: 627 [2022-12-13 19:45:29,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:29,177 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 26 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:29,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3012 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-12-13 19:45:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-12-13 19:45:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 488 states have (on average 1.6557377049180328) internal successors, (808), 506 states have internal predecessors, (808), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2022-12-13 19:45:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1025 transitions. [2022-12-13 19:45:29,256 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1025 transitions. Word has length 99 [2022-12-13 19:45:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:29,257 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1025 transitions. [2022-12-13 19:45:29,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1025 transitions. [2022-12-13 19:45:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 19:45:29,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:29,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:29,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 19:45:29,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash -56223332, now seen corresponding path program 1 times [2022-12-13 19:45:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:29,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492146954] [2022-12-13 19:45:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:45:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 19:45:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:45:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:45:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:45:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 19:45:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:29,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492146954] [2022-12-13 19:45:29,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492146954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:29,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949325908] [2022-12-13 19:45:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:29,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:29,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:45:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 19:45:30,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:30,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949325908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:30,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:30,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-12-13 19:45:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135358067] [2022-12-13 19:45:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:45:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:45:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:45:30,145 INFO L87 Difference]: Start difference. First operand 627 states and 1025 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:30,255 INFO L93 Difference]: Finished difference Result 1268 states and 2077 transitions. [2022-12-13 19:45:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2022-12-13 19:45:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:30,259 INFO L225 Difference]: With dead ends: 1268 [2022-12-13 19:45:30,260 INFO L226 Difference]: Without dead ends: 651 [2022-12-13 19:45:30,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:45:30,266 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 119 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:30,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5929 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-12-13 19:45:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 640. [2022-12-13 19:45:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 498 states have (on average 1.6526104417670682) internal successors, (823), 518 states have internal predecessors, (823), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-12-13 19:45:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1047 transitions. [2022-12-13 19:45:30,312 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1047 transitions. Word has length 85 [2022-12-13 19:45:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:30,312 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1047 transitions. [2022-12-13 19:45:30,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1047 transitions. [2022-12-13 19:45:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 19:45:30,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:30,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:30,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:45:30,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:30,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash -94231770, now seen corresponding path program 1 times [2022-12-13 19:45:30,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:30,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367713482] [2022-12-13 19:45:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:45:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 19:45:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:45:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:45:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:45:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:45:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 19:45:31,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:31,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367713482] [2022-12-13 19:45:31,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367713482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:31,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329479177] [2022-12-13 19:45:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:31,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:31,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:31,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:31,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:45:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:31,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:31,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329479177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:31,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:31,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-13 19:45:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219215493] [2022-12-13 19:45:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:31,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:45:31,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:45:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:31,310 INFO L87 Difference]: Start difference. First operand 640 states and 1047 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:31,423 INFO L93 Difference]: Finished difference Result 1288 states and 2110 transitions. [2022-12-13 19:45:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:31,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-12-13 19:45:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:31,430 INFO L225 Difference]: With dead ends: 1288 [2022-12-13 19:45:31,430 INFO L226 Difference]: Without dead ends: 660 [2022-12-13 19:45:31,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:45:31,435 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 130 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:31,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5911 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-12-13 19:45:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 640. [2022-12-13 19:45:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 498 states have (on average 1.6526104417670682) internal successors, (823), 518 states have internal predecessors, (823), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-12-13 19:45:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1047 transitions. [2022-12-13 19:45:31,456 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1047 transitions. Word has length 102 [2022-12-13 19:45:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:31,456 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1047 transitions. [2022-12-13 19:45:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1047 transitions. [2022-12-13 19:45:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 19:45:31,458 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:31,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:31,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:45:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:31,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1654658892, now seen corresponding path program 1 times [2022-12-13 19:45:31,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:31,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881825767] [2022-12-13 19:45:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:45:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:45:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 19:45:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 19:45:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 19:45:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 19:45:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 19:45:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881825767] [2022-12-13 19:45:31,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881825767] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157705236] [2022-12-13 19:45:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:31,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:31,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:45:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:32,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 19:45:32,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:32,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157705236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:32,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:32,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-13 19:45:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398949512] [2022-12-13 19:45:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:45:32,192 INFO L87 Difference]: Start difference. First operand 640 states and 1047 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:32,271 INFO L93 Difference]: Finished difference Result 1283 states and 2100 transitions. [2022-12-13 19:45:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:45:32,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-12-13 19:45:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:32,276 INFO L225 Difference]: With dead ends: 1283 [2022-12-13 19:45:32,276 INFO L226 Difference]: Without dead ends: 651 [2022-12-13 19:45:32,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:45:32,279 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 20 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:32,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2980 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-12-13 19:45:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2022-12-13 19:45:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 526 states have internal predecessors, (832), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-12-13 19:45:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1055 transitions. [2022-12-13 19:45:32,297 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1055 transitions. Word has length 102 [2022-12-13 19:45:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:32,297 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1055 transitions. [2022-12-13 19:45:32,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1055 transitions. [2022-12-13 19:45:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:45:32,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:32,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:32,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:45:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:32,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -943163985, now seen corresponding path program 1 times [2022-12-13 19:45:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553058293] [2022-12-13 19:45:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:45:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 19:45:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 19:45:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:45:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:45:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 19:45:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 19:45:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:32,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553058293] [2022-12-13 19:45:32,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553058293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:32,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558907189] [2022-12-13 19:45:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:32,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:32,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:32,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:45:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:33,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:33,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558907189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:33,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:33,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-13 19:45:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846694564] [2022-12-13 19:45:33,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:33,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:45:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:33,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:45:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:33,142 INFO L87 Difference]: Start difference. First operand 649 states and 1055 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:33,250 INFO L93 Difference]: Finished difference Result 1297 states and 2113 transitions. [2022-12-13 19:45:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 19:45:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:33,254 INFO L225 Difference]: With dead ends: 1297 [2022-12-13 19:45:33,254 INFO L226 Difference]: Without dead ends: 671 [2022-12-13 19:45:33,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:45:33,257 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 141 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5876 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5876 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-12-13 19:45:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 649. [2022-12-13 19:45:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 526 states have internal predecessors, (832), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-12-13 19:45:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1055 transitions. [2022-12-13 19:45:33,274 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1055 transitions. Word has length 103 [2022-12-13 19:45:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:33,274 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1055 transitions. [2022-12-13 19:45:33,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:33,274 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1055 transitions. [2022-12-13 19:45:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 19:45:33,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:33,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:33,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:33,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:33,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash -954877534, now seen corresponding path program 1 times [2022-12-13 19:45:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:33,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838300430] [2022-12-13 19:45:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:45:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 19:45:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:45:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:45:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 19:45:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:45:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 19:45:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:33,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838300430] [2022-12-13 19:45:33,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838300430] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:33,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752459459] [2022-12-13 19:45:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:33,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:33,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:45:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:34,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:34,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:34,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752459459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:34,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:34,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 19:45:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88922442] [2022-12-13 19:45:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:45:34,095 INFO L87 Difference]: Start difference. First operand 649 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:34,232 INFO L93 Difference]: Finished difference Result 1329 states and 2181 transitions. [2022-12-13 19:45:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:45:34,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-12-13 19:45:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:34,236 INFO L225 Difference]: With dead ends: 1329 [2022-12-13 19:45:34,236 INFO L226 Difference]: Without dead ends: 703 [2022-12-13 19:45:34,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:45:34,239 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 167 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:34,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2823 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-12-13 19:45:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 694. [2022-12-13 19:45:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-12-13 19:45:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-12-13 19:45:34,255 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 104 [2022-12-13 19:45:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:34,255 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-12-13 19:45:34,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-12-13 19:45:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 19:45:34,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:34,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:34,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:45:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 19:45:34,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 274298455, now seen corresponding path program 1 times [2022-12-13 19:45:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035792358] [2022-12-13 19:45:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:45:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:45:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:45:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 19:45:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 19:45:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 19:45:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 19:45:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035792358] [2022-12-13 19:45:34,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035792358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618801625] [2022-12-13 19:45:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:34,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:34,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:45:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:35,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:35,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:35,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618801625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:35,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:35,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-12-13 19:45:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551530276] [2022-12-13 19:45:35,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:35,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:45:35,102 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:35,257 INFO L93 Difference]: Finished difference Result 1399 states and 2296 transitions. [2022-12-13 19:45:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-12-13 19:45:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:35,263 INFO L225 Difference]: With dead ends: 1399 [2022-12-13 19:45:35,268 INFO L226 Difference]: Without dead ends: 728 [2022-12-13 19:45:35,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:45:35,272 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 140 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:35,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6836 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:35,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-12-13 19:45:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 694. [2022-12-13 19:45:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-12-13 19:45:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-12-13 19:45:35,298 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 105 [2022-12-13 19:45:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:35,298 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-12-13 19:45:35,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-12-13 19:45:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 19:45:35,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:35,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:35,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:45:35,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:35,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1901691604, now seen corresponding path program 1 times [2022-12-13 19:45:35,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:35,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091006747] [2022-12-13 19:45:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:35,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:45:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 19:45:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:45:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 19:45:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 19:45:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 19:45:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 19:45:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:35,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091006747] [2022-12-13 19:45:35,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091006747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:35,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449010136] [2022-12-13 19:45:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:35,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:35,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:35,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:35,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:45:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:45:36,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:36,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449010136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:36,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:36,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-12-13 19:45:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672005012] [2022-12-13 19:45:36,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:36,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:36,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:45:36,135 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:36,284 INFO L93 Difference]: Finished difference Result 1399 states and 2296 transitions. [2022-12-13 19:45:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-12-13 19:45:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:36,288 INFO L225 Difference]: With dead ends: 1399 [2022-12-13 19:45:36,288 INFO L226 Difference]: Without dead ends: 728 [2022-12-13 19:45:36,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:45:36,290 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 150 mSDsluCounter, 5832 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:36,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6824 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-12-13 19:45:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 694. [2022-12-13 19:45:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-12-13 19:45:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-12-13 19:45:36,307 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 106 [2022-12-13 19:45:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:36,307 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-12-13 19:45:36,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-12-13 19:45:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 19:45:36,308 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:36,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:36,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:36,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:36,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 757224293, now seen corresponding path program 1 times [2022-12-13 19:45:36,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:36,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411244809] [2022-12-13 19:45:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:45:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 19:45:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:45:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 19:45:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 19:45:36,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411244809] [2022-12-13 19:45:36,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411244809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848539429] [2022-12-13 19:45:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:36,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:36,719 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:36,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:45:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:36,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 19:45:36,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:36,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848539429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:36,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:36,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-12-13 19:45:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240061900] [2022-12-13 19:45:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:36,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:36,969 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:37,100 INFO L93 Difference]: Finished difference Result 1390 states and 2281 transitions. [2022-12-13 19:45:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2022-12-13 19:45:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:37,105 INFO L225 Difference]: With dead ends: 1390 [2022-12-13 19:45:37,105 INFO L226 Difference]: Without dead ends: 719 [2022-12-13 19:45:37,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:45:37,108 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 160 mSDsluCounter, 5820 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6812 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:37,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6812 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:37,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-12-13 19:45:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 694. [2022-12-13 19:45:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-12-13 19:45:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-12-13 19:45:37,133 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 91 [2022-12-13 19:45:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:37,134 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-12-13 19:45:37,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-12-13 19:45:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 19:45:37,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:37,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:37,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:45:37,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:37,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1217546010, now seen corresponding path program 1 times [2022-12-13 19:45:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:37,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944190956] [2022-12-13 19:45:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 19:45:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:45:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:45:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 19:45:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 19:45:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 19:45:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 19:45:37,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944190956] [2022-12-13 19:45:37,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944190956] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064297316] [2022-12-13 19:45:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:37,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:37,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:37,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:45:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:37,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:37,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:45:37,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:37,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064297316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:37,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:37,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 19:45:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595774411] [2022-12-13 19:45:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:45:37,813 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:37,859 INFO L93 Difference]: Finished difference Result 1354 states and 2228 transitions. [2022-12-13 19:45:37,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:45:37,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-12-13 19:45:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:37,865 INFO L225 Difference]: With dead ends: 1354 [2022-12-13 19:45:37,865 INFO L226 Difference]: Without dead ends: 694 [2022-12-13 19:45:37,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:37,869 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 35 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:37,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2978 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-12-13 19:45:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2022-12-13 19:45:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6563636363636363) internal successors, (911), 570 states have internal predecessors, (911), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-12-13 19:45:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1133 transitions. [2022-12-13 19:45:37,885 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1133 transitions. Word has length 107 [2022-12-13 19:45:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:37,886 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1133 transitions. [2022-12-13 19:45:37,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1133 transitions. [2022-12-13 19:45:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 19:45:37,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:37,887 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 19:45:37,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:45:38,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:38,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1923478236, now seen corresponding path program 1 times [2022-12-13 19:45:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:38,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756701532] [2022-12-13 19:45:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:45:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:45:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 19:45:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 19:45:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 19:45:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756701532] [2022-12-13 19:45:38,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756701532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507649438] [2022-12-13 19:45:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:38,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:38,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:45:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:38,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 19:45:38,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:38,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507649438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:38,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:38,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 19:45:38,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217634471] [2022-12-13 19:45:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:45:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:45:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:45:38,495 INFO L87 Difference]: Start difference. First operand 694 states and 1133 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:38,584 INFO L93 Difference]: Finished difference Result 1322 states and 2160 transitions. [2022-12-13 19:45:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2022-12-13 19:45:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:38,588 INFO L225 Difference]: With dead ends: 1322 [2022-12-13 19:45:38,588 INFO L226 Difference]: Without dead ends: 720 [2022-12-13 19:45:38,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:45:38,590 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 116 mSDsluCounter, 4888 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5887 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:38,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 5887 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-13 19:45:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 707. [2022-12-13 19:45:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6535714285714285) internal successors, (926), 582 states have internal predecessors, (926), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-12-13 19:45:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2022-12-13 19:45:38,605 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 92 [2022-12-13 19:45:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:38,605 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2022-12-13 19:45:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2022-12-13 19:45:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 19:45:38,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:38,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:38,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:45:38,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:45:38,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash -89191000, now seen corresponding path program 1 times [2022-12-13 19:45:38,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:38,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903883261] [2022-12-13 19:45:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:45:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 19:45:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 19:45:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 19:45:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 19:45:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 19:45:39,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:39,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903883261] [2022-12-13 19:45:39,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903883261] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:39,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506834811] [2022-12-13 19:45:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:39,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:39,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:39,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:45:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:39,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 19:45:39,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:39,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506834811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:39,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:39,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 19:45:39,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852006559] [2022-12-13 19:45:39,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:45:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:45:39,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:45:39,334 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:39,406 INFO L93 Difference]: Finished difference Result 1331 states and 2175 transitions. [2022-12-13 19:45:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2022-12-13 19:45:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:39,409 INFO L225 Difference]: With dead ends: 1331 [2022-12-13 19:45:39,409 INFO L226 Difference]: Without dead ends: 729 [2022-12-13 19:45:39,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:39,411 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 127 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5875 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:39,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 5875 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-12-13 19:45:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 707. [2022-12-13 19:45:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6535714285714285) internal successors, (926), 582 states have internal predecessors, (926), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-12-13 19:45:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2022-12-13 19:45:39,427 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 109 [2022-12-13 19:45:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:39,427 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2022-12-13 19:45:39,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 19:45:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2022-12-13 19:45:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 19:45:39,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:39,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:39,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:45:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:45:39,631 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 715482686, now seen corresponding path program 1 times [2022-12-13 19:45:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:39,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261554619] [2022-12-13 19:45:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:45:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:45:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 19:45:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 19:45:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 19:45:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 19:45:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 19:45:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261554619] [2022-12-13 19:45:39,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261554619] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097222635] [2022-12-13 19:45:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:39,918 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:39,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:45:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:40,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:45:40,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:40,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097222635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:40,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:40,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 19:45:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254808275] [2022-12-13 19:45:40,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:40,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:45:40,127 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:40,166 INFO L93 Difference]: Finished difference Result 1376 states and 2258 transitions. [2022-12-13 19:45:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:45:40,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2022-12-13 19:45:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:40,169 INFO L225 Difference]: With dead ends: 1376 [2022-12-13 19:45:40,169 INFO L226 Difference]: Without dead ends: 707 [2022-12-13 19:45:40,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:40,171 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 10 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:40,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2980 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-12-13 19:45:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-12-13 19:45:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6482142857142856) internal successors, (923), 582 states have internal predecessors, (923), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-12-13 19:45:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1151 transitions. [2022-12-13 19:45:40,185 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1151 transitions. Word has length 109 [2022-12-13 19:45:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:40,186 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1151 transitions. [2022-12-13 19:45:40,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1151 transitions. [2022-12-13 19:45:40,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 19:45:40,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:40,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:40,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:45:40,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:45:40,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1801687543, now seen corresponding path program 1 times [2022-12-13 19:45:40,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:40,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501004823] [2022-12-13 19:45:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 19:45:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 19:45:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 19:45:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 19:45:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 19:45:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 19:45:40,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:40,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501004823] [2022-12-13 19:45:40,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501004823] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:40,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740697445] [2022-12-13 19:45:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:40,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:40,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:40,675 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:40,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:45:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:40,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:45:40,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 19:45:40,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:40,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740697445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:40,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:40,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-12-13 19:45:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974176613] [2022-12-13 19:45:40,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:40,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:45:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:45:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:40,916 INFO L87 Difference]: Start difference. First operand 707 states and 1151 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:41,036 INFO L93 Difference]: Finished difference Result 1372 states and 2253 transitions. [2022-12-13 19:45:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:45:41,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2022-12-13 19:45:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:41,041 INFO L225 Difference]: With dead ends: 1372 [2022-12-13 19:45:41,041 INFO L226 Difference]: Without dead ends: 770 [2022-12-13 19:45:41,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:41,043 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 237 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:41,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2803 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-12-13 19:45:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 752. [2022-12-13 19:45:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-12-13 19:45:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-12-13 19:45:41,062 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 110 [2022-12-13 19:45:41,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:41,063 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-12-13 19:45:41,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 19:45:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-12-13 19:45:41,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 19:45:41,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:41,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:41,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 19:45:41,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 19:45:41,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1159601758, now seen corresponding path program 1 times [2022-12-13 19:45:41,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:41,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879362132] [2022-12-13 19:45:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:41,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:45:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:45:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 19:45:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:45:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:45:41,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879362132] [2022-12-13 19:45:41,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879362132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795964333] [2022-12-13 19:45:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:41,406 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:41,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:45:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:41,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 19:45:41,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:41,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795964333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:41,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:41,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-12-13 19:45:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697760799] [2022-12-13 19:45:41,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:41,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:41,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:41,630 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:41,753 INFO L93 Difference]: Finished difference Result 1388 states and 2269 transitions. [2022-12-13 19:45:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-12-13 19:45:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:41,756 INFO L225 Difference]: With dead ends: 1388 [2022-12-13 19:45:41,756 INFO L226 Difference]: Without dead ends: 786 [2022-12-13 19:45:41,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:41,758 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 138 mSDsluCounter, 5805 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6789 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:41,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6789 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-12-13 19:45:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 752. [2022-12-13 19:45:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-12-13 19:45:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-12-13 19:45:41,773 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 94 [2022-12-13 19:45:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:41,773 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-12-13 19:45:41,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-12-13 19:45:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 19:45:41,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:41,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:41,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:41,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:41,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2057288235, now seen corresponding path program 1 times [2022-12-13 19:45:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:41,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690562249] [2022-12-13 19:45:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:41,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 19:45:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:45:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 19:45:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 19:45:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:45:42,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:42,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690562249] [2022-12-13 19:45:42,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690562249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:42,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544466014] [2022-12-13 19:45:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:42,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:42,096 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:42,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 19:45:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 19:45:42,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:42,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544466014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:42,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:42,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-12-13 19:45:42,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648352023] [2022-12-13 19:45:42,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:42,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:45:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:45:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:42,329 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:42,448 INFO L93 Difference]: Finished difference Result 1379 states and 2255 transitions. [2022-12-13 19:45:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:45:42,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-12-13 19:45:42,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:42,453 INFO L225 Difference]: With dead ends: 1379 [2022-12-13 19:45:42,453 INFO L226 Difference]: Without dead ends: 777 [2022-12-13 19:45:42,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:45:42,455 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 148 mSDsluCounter, 5793 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:42,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6777 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:45:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-12-13 19:45:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 752. [2022-12-13 19:45:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-12-13 19:45:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-12-13 19:45:42,469 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 95 [2022-12-13 19:45:42,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:42,470 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-12-13 19:45:42,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 19:45:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-12-13 19:45:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 19:45:42,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:42,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:42,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 19:45:42,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:42,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -465280610, now seen corresponding path program 1 times [2022-12-13 19:45:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:42,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369712859] [2022-12-13 19:45:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:45:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 19:45:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 19:45:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 19:45:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 19:45:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 19:45:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369712859] [2022-12-13 19:45:42,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369712859] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015185702] [2022-12-13 19:45:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:42,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:42,914 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:42,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 19:45:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:43,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:45:43,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 19:45:43,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:43,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015185702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:43,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:43,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 19:45:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722835443] [2022-12-13 19:45:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:43,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:45:43,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:43,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:45:43,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:43,271 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 19:45:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:45,815 INFO L93 Difference]: Finished difference Result 2614 states and 4323 transitions. [2022-12-13 19:45:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:45:45,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-12-13 19:45:45,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:45,822 INFO L225 Difference]: With dead ends: 2614 [2022-12-13 19:45:45,823 INFO L226 Difference]: Without dead ends: 2016 [2022-12-13 19:45:45,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:45,825 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 4633 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 4128 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 5082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 4128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:45,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 1370 Invalid, 5082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 4128 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 19:45:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-12-13 19:45:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1849. [2022-12-13 19:45:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1477 states have (on average 1.6587677725118484) internal successors, (2450), 1515 states have internal predecessors, (2450), 293 states have call successors, (293), 75 states have call predecessors, (293), 78 states have return successors, (314), 273 states have call predecessors, (314), 289 states have call successors, (314) [2022-12-13 19:45:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 3057 transitions. [2022-12-13 19:45:45,875 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 3057 transitions. Word has length 112 [2022-12-13 19:45:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:45,875 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 3057 transitions. [2022-12-13 19:45:45,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 19:45:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 3057 transitions. [2022-12-13 19:45:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 19:45:45,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:45,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:45,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 19:45:46,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:45:46,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 805292296, now seen corresponding path program 1 times [2022-12-13 19:45:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090974431] [2022-12-13 19:45:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:45:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:45:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:45:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 19:45:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 19:45:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 19:45:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 19:45:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 19:45:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 19:45:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 19:45:46,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090974431] [2022-12-13 19:45:46,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090974431] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895498595] [2022-12-13 19:45:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:46,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:46,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 19:45:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:45:46,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:45:46,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895498595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:46,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:46,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 19:45:46,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364368504] [2022-12-13 19:45:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:46,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:45:46,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:45:46,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:46,545 INFO L87 Difference]: Start difference. First operand 1849 states and 3057 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:46,961 INFO L93 Difference]: Finished difference Result 3568 states and 5998 transitions. [2022-12-13 19:45:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:46,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2022-12-13 19:45:46,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:46,968 INFO L225 Difference]: With dead ends: 3568 [2022-12-13 19:45:46,968 INFO L226 Difference]: Without dead ends: 1873 [2022-12-13 19:45:46,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:46,973 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 947 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:46,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 2529 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:45:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-12-13 19:45:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1873. [2022-12-13 19:45:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1498 states have (on average 1.6595460614152202) internal successors, (2486), 1536 states have internal predecessors, (2486), 293 states have call successors, (293), 78 states have call predecessors, (293), 81 states have return successors, (317), 273 states have call predecessors, (317), 289 states have call successors, (317) [2022-12-13 19:45:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3096 transitions. [2022-12-13 19:45:47,021 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3096 transitions. Word has length 151 [2022-12-13 19:45:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3096 transitions. [2022-12-13 19:45:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3096 transitions. [2022-12-13 19:45:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 19:45:47,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:47,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:47,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 19:45:47,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:45:47,225 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash 561960470, now seen corresponding path program 1 times [2022-12-13 19:45:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:47,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393105438] [2022-12-13 19:45:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:47,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:45:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 19:45:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:45:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 19:45:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 19:45:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 19:45:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 19:45:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 19:45:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393105438] [2022-12-13 19:45:47,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393105438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195928348] [2022-12-13 19:45:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:47,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:47,492 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 19:45:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:47,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:45:47,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 19:45:47,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:47,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195928348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:47,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:47,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 19:45:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230629368] [2022-12-13 19:45:47,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:45:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:45:47,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:47,716 INFO L87 Difference]: Start difference. First operand 1873 states and 3096 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:45:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:47,860 INFO L93 Difference]: Finished difference Result 4662 states and 7681 transitions. [2022-12-13 19:45:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:47,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-12-13 19:45:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:47,871 INFO L225 Difference]: With dead ends: 4662 [2022-12-13 19:45:47,871 INFO L226 Difference]: Without dead ends: 2943 [2022-12-13 19:45:47,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:45:47,876 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1042 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:47,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 4797 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:45:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2022-12-13 19:45:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2935. [2022-12-13 19:45:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2343 states have (on average 1.6312419974391805) internal successors, (3822), 2382 states have internal predecessors, (3822), 459 states have call successors, (459), 124 states have call predecessors, (459), 132 states have return successors, (523), 442 states have call predecessors, (523), 453 states have call successors, (523) [2022-12-13 19:45:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 4804 transitions. [2022-12-13 19:45:47,956 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 4804 transitions. Word has length 152 [2022-12-13 19:45:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:47,956 INFO L495 AbstractCegarLoop]: Abstraction has 2935 states and 4804 transitions. [2022-12-13 19:45:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:45:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 4804 transitions. [2022-12-13 19:45:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 19:45:47,959 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:47,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:47,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 19:45:48,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:48,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 378290300, now seen corresponding path program 1 times [2022-12-13 19:45:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:48,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482335412] [2022-12-13 19:45:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:48,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:45:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:45:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:45:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:45:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 19:45:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 19:45:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 19:45:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 19:45:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 19:45:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:48,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482335412] [2022-12-13 19:45:48,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482335412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:48,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602085229] [2022-12-13 19:45:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:48,424 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:48,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 19:45:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:48,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:45:48,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:45:48,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:48,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602085229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:48,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:48,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 19:45:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539807406] [2022-12-13 19:45:48,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:48,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:45:48,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:48,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:45:48,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:48,753 INFO L87 Difference]: Start difference. First operand 2935 states and 4804 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:49,193 INFO L93 Difference]: Finished difference Result 5764 states and 9605 transitions. [2022-12-13 19:45:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-12-13 19:45:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:49,203 INFO L225 Difference]: With dead ends: 5764 [2022-12-13 19:45:49,203 INFO L226 Difference]: Without dead ends: 2983 [2022-12-13 19:45:49,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:49,212 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 937 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:49,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 2529 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:45:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2022-12-13 19:45:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2983. [2022-12-13 19:45:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2385 states have (on average 1.6327044025157234) internal successors, (3894), 2424 states have internal predecessors, (3894), 459 states have call successors, (459), 130 states have call predecessors, (459), 138 states have return successors, (528), 442 states have call predecessors, (528), 453 states have call successors, (528) [2022-12-13 19:45:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 4881 transitions. [2022-12-13 19:45:49,288 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 4881 transitions. Word has length 153 [2022-12-13 19:45:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:49,289 INFO L495 AbstractCegarLoop]: Abstraction has 2983 states and 4881 transitions. [2022-12-13 19:45:49,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 4881 transitions. [2022-12-13 19:45:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-13 19:45:49,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:49,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:49,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 19:45:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:49,494 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -345557712, now seen corresponding path program 1 times [2022-12-13 19:45:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:49,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949025029] [2022-12-13 19:45:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:49,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:45:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:45:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:45:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:45:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:45:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:45:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 19:45:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 19:45:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:45:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:45:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 19:45:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:45:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-12-13 19:45:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-12-13 19:45:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-12-13 19:45:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-12-13 19:45:49,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:49,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949025029] [2022-12-13 19:45:49,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949025029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:49,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443954109] [2022-12-13 19:45:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:49,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:49,940 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:49,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 19:45:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:50,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:45:50,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 19:45:50,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:50,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443954109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:50,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:50,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-12-13 19:45:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274548943] [2022-12-13 19:45:50,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:50,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:45:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:45:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:50,290 INFO L87 Difference]: Start difference. First operand 2983 states and 4881 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 19:45:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:50,679 INFO L93 Difference]: Finished difference Result 5860 states and 9741 transitions. [2022-12-13 19:45:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 230 [2022-12-13 19:45:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:50,690 INFO L225 Difference]: With dead ends: 5860 [2022-12-13 19:45:50,691 INFO L226 Difference]: Without dead ends: 3031 [2022-12-13 19:45:50,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:45:50,707 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 941 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:50,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2529 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:45:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-12-13 19:45:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 3031. [2022-12-13 19:45:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2427 states have (on average 1.6341161928306551) internal successors, (3966), 2466 states have internal predecessors, (3966), 459 states have call successors, (459), 136 states have call predecessors, (459), 144 states have return successors, (533), 442 states have call predecessors, (533), 453 states have call successors, (533) [2022-12-13 19:45:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4958 transitions. [2022-12-13 19:45:50,780 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4958 transitions. Word has length 230 [2022-12-13 19:45:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:50,780 INFO L495 AbstractCegarLoop]: Abstraction has 3031 states and 4958 transitions. [2022-12-13 19:45:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 19:45:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4958 transitions. [2022-12-13 19:45:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:45:50,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:50,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:50,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 19:45:50,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:50,983 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:50,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash 526277060, now seen corresponding path program 1 times [2022-12-13 19:45:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:50,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145627364] [2022-12-13 19:45:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:45:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 19:45:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:45:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:45:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:45:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 19:45:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 19:45:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 19:45:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 19:45:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 19:45:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145627364] [2022-12-13 19:45:51,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145627364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013180168] [2022-12-13 19:45:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:51,241 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:51,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 19:45:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:51,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:45:51,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:45:51,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:45:51,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013180168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:45:51,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:45:51,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 19:45:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209568776] [2022-12-13 19:45:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:45:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:45:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:45:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:45:51,502 INFO L87 Difference]: Start difference. First operand 3031 states and 4958 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:45:52,006 INFO L93 Difference]: Finished difference Result 5956 states and 9877 transitions. [2022-12-13 19:45:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:45:52,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2022-12-13 19:45:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:45:52,018 INFO L225 Difference]: With dead ends: 5956 [2022-12-13 19:45:52,018 INFO L226 Difference]: Without dead ends: 3079 [2022-12-13 19:45:52,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:45:52,026 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 938 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:45:52,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2529 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 19:45:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2022-12-13 19:45:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3079. [2022-12-13 19:45:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 2469 states have (on average 1.6354799513973268) internal successors, (4038), 2508 states have internal predecessors, (4038), 459 states have call successors, (459), 142 states have call predecessors, (459), 150 states have return successors, (538), 442 states have call predecessors, (538), 453 states have call successors, (538) [2022-12-13 19:45:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 5035 transitions. [2022-12-13 19:45:52,102 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 5035 transitions. Word has length 157 [2022-12-13 19:45:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:45:52,102 INFO L495 AbstractCegarLoop]: Abstraction has 3079 states and 5035 transitions. [2022-12-13 19:45:52,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:45:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 5035 transitions. [2022-12-13 19:45:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-12-13 19:45:52,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:45:52,112 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:52,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 19:45:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:52,313 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:45:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1874520112, now seen corresponding path program 1 times [2022-12-13 19:45:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:52,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504229491] [2022-12-13 19:45:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:45:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:45:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 19:45:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:45:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 19:45:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:45:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:45:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:45:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 19:45:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 19:45:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:45:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:45:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:45:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:45:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-12-13 19:45:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 19:45:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-12-13 19:45:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 19:45:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504229491] [2022-12-13 19:45:52,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504229491] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295103275] [2022-12-13 19:45:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:52,747 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:52,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 19:45:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:53,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:45:53,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-13 19:45:53,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:45:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 19:45:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295103275] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:45:53,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:45:53,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2022-12-13 19:45:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054297489] [2022-12-13 19:45:53,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:45:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 19:45:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 19:45:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:45:53,424 INFO L87 Difference]: Start difference. First operand 3079 states and 5035 transitions. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 9 states have internal predecessors, (172), 5 states have call successors, (44), 9 states have call predecessors, (44), 5 states have return successors, (40), 6 states have call predecessors, (40), 5 states have call successors, (40) [2022-12-13 19:46:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:15,465 INFO L93 Difference]: Finished difference Result 19900 states and 34645 transitions. [2022-12-13 19:46:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 19:46:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 9 states have internal predecessors, (172), 5 states have call successors, (44), 9 states have call predecessors, (44), 5 states have return successors, (40), 6 states have call predecessors, (40), 5 states have call successors, (40) Word has length 238 [2022-12-13 19:46:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:15,531 INFO L225 Difference]: With dead ends: 19900 [2022-12-13 19:46:15,531 INFO L226 Difference]: Without dead ends: 16790 [2022-12-13 19:46:15,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 544 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=499, Invalid=1571, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 19:46:15,552 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 10117 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 13766 mSolverCounterSat, 5414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10241 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 19180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5414 IncrementalHoareTripleChecker+Valid, 13766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:15,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10241 Valid, 4626 Invalid, 19180 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5414 Valid, 13766 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2022-12-13 19:46:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16790 states. [2022-12-13 19:46:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16790 to 10276. [2022-12-13 19:46:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10276 states, 8069 states have (on average 1.574792415417028) internal successors, (12707), 8207 states have internal predecessors, (12707), 1597 states have call successors, (1597), 529 states have call predecessors, (1597), 609 states have return successors, (2526), 1572 states have call predecessors, (2526), 1583 states have call successors, (2526) [2022-12-13 19:46:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 16830 transitions. [2022-12-13 19:46:17,339 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 16830 transitions. Word has length 238 [2022-12-13 19:46:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:17,339 INFO L495 AbstractCegarLoop]: Abstraction has 10276 states and 16830 transitions. [2022-12-13 19:46:17,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 9 states have internal predecessors, (172), 5 states have call successors, (44), 9 states have call predecessors, (44), 5 states have return successors, (40), 6 states have call predecessors, (40), 5 states have call successors, (40) [2022-12-13 19:46:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 16830 transitions. [2022-12-13 19:46:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 19:46:17,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:17,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:46:17,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 19:46:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:17,544 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1766682595, now seen corresponding path program 1 times [2022-12-13 19:46:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642005116] [2022-12-13 19:46:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:46:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:46:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 19:46:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:46:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 19:46:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:46:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:46:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:46:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 19:46:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 19:46:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 19:46:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 19:46:17,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:17,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642005116] [2022-12-13 19:46:17,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642005116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:46:17,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931938203] [2022-12-13 19:46:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:17,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:17,914 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:46:17,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 19:46:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:18,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:46:18,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 19:46:18,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:46:18,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931938203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:18,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:46:18,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-12-13 19:46:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904212330] [2022-12-13 19:46:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:18,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:46:18,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:46:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:46:18,139 INFO L87 Difference]: Start difference. First operand 10276 states and 16830 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 19:46:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:20,210 INFO L93 Difference]: Finished difference Result 20648 states and 33808 transitions. [2022-12-13 19:46:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:46:20,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-12-13 19:46:20,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:20,260 INFO L225 Difference]: With dead ends: 20648 [2022-12-13 19:46:20,260 INFO L226 Difference]: Without dead ends: 10389 [2022-12-13 19:46:20,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 19:46:20,298 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 138 mSDsluCounter, 4858 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5864 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:20,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5864 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:46:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-12-13 19:46:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 10269. [2022-12-13 19:46:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10269 states, 8062 states have (on average 1.574175142644505) internal successors, (12691), 8200 states have internal predecessors, (12691), 1597 states have call successors, (1597), 529 states have call predecessors, (1597), 609 states have return successors, (2526), 1572 states have call predecessors, (2526), 1583 states have call successors, (2526) [2022-12-13 19:46:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10269 states to 10269 states and 16814 transitions. [2022-12-13 19:46:21,897 INFO L78 Accepts]: Start accepts. Automaton has 10269 states and 16814 transitions. Word has length 160 [2022-12-13 19:46:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:21,897 INFO L495 AbstractCegarLoop]: Abstraction has 10269 states and 16814 transitions. [2022-12-13 19:46:21,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 19:46:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10269 states and 16814 transitions. [2022-12-13 19:46:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 19:46:21,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:21,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:46:21,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 19:46:22,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 19:46:22,104 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1867859416, now seen corresponding path program 1 times [2022-12-13 19:46:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:22,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918268115] [2022-12-13 19:46:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:46:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:46:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:46:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:46:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 19:46:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:46:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:46:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:46:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 19:46:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 19:46:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 19:46:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:46:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918268115] [2022-12-13 19:46:22,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918268115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:22,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:22,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:46:22,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886832745] [2022-12-13 19:46:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:46:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:46:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:46:22,439 INFO L87 Difference]: Start difference. First operand 10269 states and 16814 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:46:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:30,265 INFO L93 Difference]: Finished difference Result 23734 states and 39442 transitions. [2022-12-13 19:46:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:46:30,266 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), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-12-13 19:46:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:30,329 INFO L225 Difference]: With dead ends: 23734 [2022-12-13 19:46:30,329 INFO L226 Difference]: Without dead ends: 13567 [2022-12-13 19:46:30,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:46:30,367 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1166 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:30,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1771 Invalid, 3641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3359 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 19:46:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13567 states. [2022-12-13 19:46:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13567 to 10321. [2022-12-13 19:46:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10321 states, 8114 states have (on average 1.5735765343850137) internal successors, (12768), 8252 states have internal predecessors, (12768), 1597 states have call successors, (1597), 529 states have call predecessors, (1597), 609 states have return successors, (2526), 1572 states have call predecessors, (2526), 1583 states have call successors, (2526) [2022-12-13 19:46:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 16891 transitions. [2022-12-13 19:46:32,030 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 16891 transitions. Word has length 161 [2022-12-13 19:46:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:32,030 INFO L495 AbstractCegarLoop]: Abstraction has 10321 states and 16891 transitions. [2022-12-13 19:46:32,030 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), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:46:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 16891 transitions. [2022-12-13 19:46:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 19:46:32,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:32,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:32,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 19:46:32,035 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:32,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 186936908, now seen corresponding path program 1 times [2022-12-13 19:46:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:32,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204630975] [2022-12-13 19:46:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:46:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:46:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:46:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 19:46:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 19:46:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 19:46:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:46:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:46:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 19:46:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 19:46:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 19:46:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 19:46:32,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:32,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204630975] [2022-12-13 19:46:32,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204630975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:32,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:32,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:46:32,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445418288] [2022-12-13 19:46:32,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:32,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:46:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:46:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:46:32,262 INFO L87 Difference]: Start difference. First operand 10321 states and 16891 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:46:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:39,306 INFO L93 Difference]: Finished difference Result 23671 states and 39334 transitions. [2022-12-13 19:46:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:46:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-12-13 19:46:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:39,369 INFO L225 Difference]: With dead ends: 23671 [2022-12-13 19:46:39,369 INFO L226 Difference]: Without dead ends: 13358 [2022-12-13 19:46:39,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:39,411 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 2161 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:39,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 1645 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 19:46:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13358 states. [2022-12-13 19:46:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13358 to 10293. [2022-12-13 19:46:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10293 states, 8089 states have (on average 1.572753121523056) internal successors, (12722), 8225 states have internal predecessors, (12722), 1596 states have call successors, (1596), 529 states have call predecessors, (1596), 607 states have return successors, (2523), 1571 states have call predecessors, (2523), 1582 states have call successors, (2523) [2022-12-13 19:46:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10293 states to 10293 states and 16841 transitions. [2022-12-13 19:46:41,107 INFO L78 Accepts]: Start accepts. Automaton has 10293 states and 16841 transitions. Word has length 161 [2022-12-13 19:46:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:41,107 INFO L495 AbstractCegarLoop]: Abstraction has 10293 states and 16841 transitions. [2022-12-13 19:46:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 19:46:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10293 states and 16841 transitions. [2022-12-13 19:46:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 19:46:41,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:41,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 19:46:41,111 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 325482255, now seen corresponding path program 1 times [2022-12-13 19:46:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347717529] [2022-12-13 19:46:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:46:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:46:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:46:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:46:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:46:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:46:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:46:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:46:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 19:46:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 19:46:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 19:46:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:46:41,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:41,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347717529] [2022-12-13 19:46:41,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347717529] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:46:41,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862605673] [2022-12-13 19:46:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:41,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:41,607 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:46:41,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 19:46:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:41,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:46:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 19:46:41,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:46:41,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862605673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:41,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:46:41,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-12-13 19:46:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041710727] [2022-12-13 19:46:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:41,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:46:41,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:46:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:46:41,920 INFO L87 Difference]: Start difference. First operand 10293 states and 16841 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 19:46:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:45,165 INFO L93 Difference]: Finished difference Result 20569 states and 34098 transitions. [2022-12-13 19:46:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:46:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-12-13 19:46:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:45,211 INFO L225 Difference]: With dead ends: 20569 [2022-12-13 19:46:45,211 INFO L226 Difference]: Without dead ends: 10371 [2022-12-13 19:46:45,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:46:45,256 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 2344 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 3003 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:45,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 1147 Invalid, 3521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3003 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 19:46:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2022-12-13 19:46:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 9676. [2022-12-13 19:46:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9676 states, 7485 states have (on average 1.5767535070140282) internal successors, (11802), 7675 states have internal predecessors, (11802), 1666 states have call successors, (1666), 453 states have call predecessors, (1666), 524 states have return successors, (2415), 1613 states have call predecessors, (2415), 1652 states have call successors, (2415) [2022-12-13 19:46:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 15883 transitions. [2022-12-13 19:46:46,889 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 15883 transitions. Word has length 162 [2022-12-13 19:46:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 9676 states and 15883 transitions. [2022-12-13 19:46:46,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-13 19:46:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 15883 transitions. [2022-12-13 19:46:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 19:46:46,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:46,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:46,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 19:46:47,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 19:46:47,093 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1057449681, now seen corresponding path program 1 times [2022-12-13 19:46:47,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:47,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594586809] [2022-12-13 19:46:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:47,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:46:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:46:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:46:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:46:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:46:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:46:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:46:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:46:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:46:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:46:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 19:46:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 19:46:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 19:46:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:46:47,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:47,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594586809] [2022-12-13 19:46:47,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594586809] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:46:47,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614787532] [2022-12-13 19:46:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:47,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:46:47,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:47,605 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:46:47,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 19:46:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:46:47,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 19:46:47,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:46:47,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614787532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:47,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:46:47,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-12-13 19:46:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295620519] [2022-12-13 19:46:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:47,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:46:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:46:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:46:47,905 INFO L87 Difference]: Start difference. First operand 9676 states and 15883 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 19:46:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:56,313 INFO L93 Difference]: Finished difference Result 34379 states and 58015 transitions. [2022-12-13 19:46:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:46:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2022-12-13 19:46:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:56,395 INFO L225 Difference]: With dead ends: 34379 [2022-12-13 19:46:56,396 INFO L226 Difference]: Without dead ends: 24777 [2022-12-13 19:46:56,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2022-12-13 19:46:56,434 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 3242 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 7657 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 8538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 7657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:56,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3358 Valid, 2357 Invalid, 8538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 7657 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 19:46:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24777 states. [2022-12-13 19:47:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24777 to 22703. [2022-12-13 19:47:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22703 states, 17509 states have (on average 1.5619395739334057) internal successors, (27348), 17973 states have internal predecessors, (27348), 3883 states have call successors, (3883), 1113 states have call predecessors, (3883), 1310 states have return successors, (5958), 3759 states have call predecessors, (5958), 3863 states have call successors, (5958) [2022-12-13 19:47:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22703 states to 22703 states and 37189 transitions. [2022-12-13 19:47:00,408 INFO L78 Accepts]: Start accepts. Automaton has 22703 states and 37189 transitions. Word has length 162 [2022-12-13 19:47:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:00,408 INFO L495 AbstractCegarLoop]: Abstraction has 22703 states and 37189 transitions. [2022-12-13 19:47:00,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-13 19:47:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22703 states and 37189 transitions. [2022-12-13 19:47:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 19:47:00,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:00,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:47:00,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 19:47:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:47:00,612 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1396351483, now seen corresponding path program 1 times [2022-12-13 19:47:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131204974] [2022-12-13 19:47:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:00,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:47:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:47:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:47:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:47:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:47:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:47:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:47:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:47:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:47:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:47:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:47:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:47:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:47:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 19:47:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 19:47:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131204974] [2022-12-13 19:47:01,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131204974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:01,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:01,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:47:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392553650] [2022-12-13 19:47:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:47:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:47:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:47:01,047 INFO L87 Difference]: Start difference. First operand 22703 states and 37189 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-13 19:47:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:39,346 INFO L93 Difference]: Finished difference Result 100669 states and 171610 transitions. [2022-12-13 19:47:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:47:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 167 [2022-12-13 19:47:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:39,661 INFO L225 Difference]: With dead ends: 100669 [2022-12-13 19:47:39,661 INFO L226 Difference]: Without dead ends: 80316 [2022-12-13 19:47:39,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:47:39,769 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 8433 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 8125 mSolverCounterSat, 4416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8506 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 12541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4416 IncrementalHoareTripleChecker+Valid, 8125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:39,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8506 Valid, 2158 Invalid, 12541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4416 Valid, 8125 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2022-12-13 19:47:39,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80316 states. [2022-12-13 19:47:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80316 to 29841. [2022-12-13 19:47:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29841 states, 23093 states have (on average 1.563157666825445) internal successors, (36098), 23633 states have internal predecessors, (36098), 5059 states have call successors, (5059), 1458 states have call predecessors, (5059), 1688 states have return successors, (7949), 4936 states have call predecessors, (7949), 5031 states have call successors, (7949) [2022-12-13 19:47:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29841 states to 29841 states and 49106 transitions. [2022-12-13 19:47:47,309 INFO L78 Accepts]: Start accepts. Automaton has 29841 states and 49106 transitions. Word has length 167 [2022-12-13 19:47:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:47,309 INFO L495 AbstractCegarLoop]: Abstraction has 29841 states and 49106 transitions. [2022-12-13 19:47:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-13 19:47:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 29841 states and 49106 transitions. [2022-12-13 19:47:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 19:47:47,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:47,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:47:47,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 19:47:47,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash -847631815, now seen corresponding path program 1 times [2022-12-13 19:47:47,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:47,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164335536] [2022-12-13 19:47:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:47,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:47:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:47:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:47:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:47:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:47:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:47:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:47:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:47:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:47:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:47:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:47:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:47:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:47:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:47:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 19:47:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:47:47,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164335536] [2022-12-13 19:47:47,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164335536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:47:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792622935] [2022-12-13 19:47:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:47:47,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:47:47,763 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:47:47,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 19:47:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:47:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:47:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 19:47:48,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:47:48,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792622935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:48,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:47:48,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-12-13 19:47:48,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311637663] [2022-12-13 19:47:48,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:48,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:47:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:47:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:47:48,002 INFO L87 Difference]: Start difference. First operand 29841 states and 49106 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:47:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:55,179 INFO L93 Difference]: Finished difference Result 30091 states and 49947 transitions. [2022-12-13 19:47:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:47:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-12-13 19:47:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:55,283 INFO L225 Difference]: With dead ends: 30091 [2022-12-13 19:47:55,283 INFO L226 Difference]: Without dead ends: 30088 [2022-12-13 19:47:55,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:47:55,299 INFO L413 NwaCegarLoop]: 1867 mSDtfsCounter, 952 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 8239 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:55,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 8239 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:47:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30088 states. [2022-12-13 19:48:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30088 to 29841. [2022-12-13 19:48:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29841 states, 23093 states have (on average 1.5615121465379118) internal successors, (36060), 23633 states have internal predecessors, (36060), 5059 states have call successors, (5059), 1458 states have call predecessors, (5059), 1688 states have return successors, (7949), 4936 states have call predecessors, (7949), 5031 states have call successors, (7949) [2022-12-13 19:48:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29841 states to 29841 states and 49068 transitions. [2022-12-13 19:48:02,992 INFO L78 Accepts]: Start accepts. Automaton has 29841 states and 49068 transitions. Word has length 167 [2022-12-13 19:48:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:02,992 INFO L495 AbstractCegarLoop]: Abstraction has 29841 states and 49068 transitions. [2022-12-13 19:48:02,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:48:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 29841 states and 49068 transitions. [2022-12-13 19:48:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 19:48:02,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:02,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:48:03,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 19:48:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:03,197 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash 552345981, now seen corresponding path program 1 times [2022-12-13 19:48:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:03,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433187482] [2022-12-13 19:48:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:48:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:48:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:48:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:48:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:48:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:48:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:48:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:48:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:48:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:48:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 19:48:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 19:48:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:48:03,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433187482] [2022-12-13 19:48:03,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433187482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228987468] [2022-12-13 19:48:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:03,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:03,691 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:03,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 19:48:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:03,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:48:03,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 19:48:03,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:48:03,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228987468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:03,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:48:03,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-12-13 19:48:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580887092] [2022-12-13 19:48:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:48:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:48:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:48:03,870 INFO L87 Difference]: Start difference. First operand 29841 states and 49068 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:48:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:10,836 INFO L93 Difference]: Finished difference Result 59841 states and 100447 transitions. [2022-12-13 19:48:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:48:10,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-12-13 19:48:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:10,951 INFO L225 Difference]: With dead ends: 59841 [2022-12-13 19:48:10,951 INFO L226 Difference]: Without dead ends: 30147 [2022-12-13 19:48:11,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:48:11,130 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 86 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:11,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2911 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:48:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30147 states. [2022-12-13 19:48:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30147 to 30147. [2022-12-13 19:48:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30147 states, 23348 states have (on average 1.5575638170292958) internal successors, (36366), 23888 states have internal predecessors, (36366), 5059 states have call successors, (5059), 1509 states have call predecessors, (5059), 1739 states have return successors, (7949), 4936 states have call predecessors, (7949), 5031 states have call successors, (7949) [2022-12-13 19:48:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30147 states to 30147 states and 49374 transitions. [2022-12-13 19:48:17,471 INFO L78 Accepts]: Start accepts. Automaton has 30147 states and 49374 transitions. Word has length 167 [2022-12-13 19:48:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:17,472 INFO L495 AbstractCegarLoop]: Abstraction has 30147 states and 49374 transitions. [2022-12-13 19:48:17,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:48:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 30147 states and 49374 transitions. [2022-12-13 19:48:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 19:48:17,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:17,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:48:17,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-13 19:48:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 19:48:17,676 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -750377434, now seen corresponding path program 1 times [2022-12-13 19:48:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:17,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150761336] [2022-12-13 19:48:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:48:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:48:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:48:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:48:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:48:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:48:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:48:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:48:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:48:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:48:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 19:48:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 19:48:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:48:18,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150761336] [2022-12-13 19:48:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150761336] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455077335] [2022-12-13 19:48:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:18,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:18,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:18,183 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:18,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 19:48:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:18,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:48:18,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 19:48:18,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:48:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455077335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:48:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-12-13 19:48:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103058927] [2022-12-13 19:48:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:48:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:18,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:48:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:48:18,510 INFO L87 Difference]: Start difference. First operand 30147 states and 49374 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:48:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:28,877 INFO L93 Difference]: Finished difference Result 58131 states and 95485 transitions. [2022-12-13 19:48:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:48:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2022-12-13 19:48:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:28,982 INFO L225 Difference]: With dead ends: 58131 [2022-12-13 19:48:28,982 INFO L226 Difference]: Without dead ends: 31174 [2022-12-13 19:48:29,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:48:29,067 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 3201 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 5796 mSolverCounterSat, 861 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 6657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 861 IncrementalHoareTripleChecker+Valid, 5796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:29,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 1821 Invalid, 6657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [861 Valid, 5796 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 19:48:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2022-12-13 19:48:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 30159. [2022-12-13 19:48:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30159 states, 23360 states have (on average 1.557277397260274) internal successors, (36378), 23900 states have internal predecessors, (36378), 5059 states have call successors, (5059), 1509 states have call predecessors, (5059), 1739 states have return successors, (7949), 4936 states have call predecessors, (7949), 5031 states have call successors, (7949) [2022-12-13 19:48:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30159 states to 30159 states and 49386 transitions. [2022-12-13 19:48:35,468 INFO L78 Accepts]: Start accepts. Automaton has 30159 states and 49386 transitions. Word has length 169 [2022-12-13 19:48:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:35,468 INFO L495 AbstractCegarLoop]: Abstraction has 30159 states and 49386 transitions. [2022-12-13 19:48:35,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:48:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 30159 states and 49386 transitions. [2022-12-13 19:48:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 19:48:35,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:35,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:48:35,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 19:48:35,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:35,673 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:35,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 903395973, now seen corresponding path program 1 times [2022-12-13 19:48:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:35,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527132707] [2022-12-13 19:48:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:48:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:48:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:48:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:48:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:48:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:48:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:48:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:48:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:48:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 19:48:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 19:48:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 19:48:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:48:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527132707] [2022-12-13 19:48:36,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527132707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861425318] [2022-12-13 19:48:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:36,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:36,173 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:36,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 19:48:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:36,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:48:36,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 19:48:36,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:48:36,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861425318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:36,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:48:36,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2022-12-13 19:48:36,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318655308] [2022-12-13 19:48:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:48:36,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:48:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:48:36,512 INFO L87 Difference]: Start difference. First operand 30159 states and 49386 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 19:48:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:45,381 INFO L93 Difference]: Finished difference Result 68546 states and 114482 transitions. [2022-12-13 19:48:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:48:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2022-12-13 19:48:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:45,524 INFO L225 Difference]: With dead ends: 68546 [2022-12-13 19:48:45,524 INFO L226 Difference]: Without dead ends: 38519 [2022-12-13 19:48:45,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:48:45,632 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 1652 mSDsluCounter, 5034 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 6607 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:45,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 6607 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:48:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38519 states. [2022-12-13 19:48:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38519 to 38208. [2022-12-13 19:48:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38208 states, 30183 states have (on average 1.5531921942815492) internal successors, (46880), 30810 states have internal predecessors, (46880), 5620 states have call successors, (5620), 2034 states have call predecessors, (5620), 2404 states have return successors, (11362), 5550 states have call predecessors, (11362), 5572 states have call successors, (11362) [2022-12-13 19:48:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38208 states to 38208 states and 63862 transitions. [2022-12-13 19:48:53,828 INFO L78 Accepts]: Start accepts. Automaton has 38208 states and 63862 transitions. Word has length 170 [2022-12-13 19:48:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:53,828 INFO L495 AbstractCegarLoop]: Abstraction has 38208 states and 63862 transitions. [2022-12-13 19:48:53,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 19:48:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 38208 states and 63862 transitions. [2022-12-13 19:48:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 19:48:53,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:53,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:48:53,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 19:48:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 19:48:54,032 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash 90405515, now seen corresponding path program 1 times [2022-12-13 19:48:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:54,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984529878] [2022-12-13 19:48:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:48:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:48:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:48:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:48:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:48:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:48:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:48:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:48:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:48:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:48:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:48:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:48:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 19:48:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 19:48:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 19:48:54,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:54,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984529878] [2022-12-13 19:48:54,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984529878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:54,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311080822] [2022-12-13 19:48:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:54,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:54,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:54,499 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:54,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 19:48:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:54,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:48:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:48:54,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:48:54,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311080822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:54,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:48:54,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-12-13 19:48:54,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983184680] [2022-12-13 19:48:54,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:54,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:48:54,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:48:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:48:54,869 INFO L87 Difference]: Start difference. First operand 38208 states and 63862 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:49:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:49:07,657 INFO L93 Difference]: Finished difference Result 73428 states and 122861 transitions. [2022-12-13 19:49:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:49:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 173 [2022-12-13 19:49:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:49:07,788 INFO L225 Difference]: With dead ends: 73428 [2022-12-13 19:49:07,788 INFO L226 Difference]: Without dead ends: 39597 [2022-12-13 19:49:07,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:49:07,919 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 3277 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 5765 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 6653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 5765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:49:07,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3393 Valid, 1721 Invalid, 6653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 5765 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 19:49:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39597 states. [2022-12-13 19:49:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39597 to 38190. [2022-12-13 19:49:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38190 states, 30165 states have (on average 1.5523288579479528) internal successors, (46826), 30792 states have internal predecessors, (46826), 5620 states have call successors, (5620), 2034 states have call predecessors, (5620), 2404 states have return successors, (11362), 5550 states have call predecessors, (11362), 5572 states have call successors, (11362) [2022-12-13 19:49:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38190 states to 38190 states and 63808 transitions. [2022-12-13 19:49:16,166 INFO L78 Accepts]: Start accepts. Automaton has 38190 states and 63808 transitions. Word has length 173 [2022-12-13 19:49:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:49:16,167 INFO L495 AbstractCegarLoop]: Abstraction has 38190 states and 63808 transitions. [2022-12-13 19:49:16,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:49:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 38190 states and 63808 transitions. [2022-12-13 19:49:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 19:49:16,169 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:49:16,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:49:16,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 19:49:16,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:49:16,370 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:49:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:49:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash 28756065, now seen corresponding path program 1 times [2022-12-13 19:49:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:49:16,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484231649] [2022-12-13 19:49:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:16,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:49:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:49:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:49:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:49:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:49:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:49:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:49:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:49:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:49:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:49:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:49:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:49:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:49:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 19:49:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 19:49:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 19:49:16,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:49:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484231649] [2022-12-13 19:49:16,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484231649] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:49:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690707342] [2022-12-13 19:49:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:16,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:49:16,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:49:16,838 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:49:16,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 19:49:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:17,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:49:17,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:49:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 19:49:17,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:49:17,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690707342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:49:17,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:49:17,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-12-13 19:49:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292235473] [2022-12-13 19:49:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:49:17,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:49:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:49:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:49:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:49:17,063 INFO L87 Difference]: Start difference. First operand 38190 states and 63808 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:49:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:49:25,574 INFO L93 Difference]: Finished difference Result 76507 states and 132351 transitions. [2022-12-13 19:49:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:49:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-12-13 19:49:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:49:25,719 INFO L225 Difference]: With dead ends: 76507 [2022-12-13 19:49:25,719 INFO L226 Difference]: Without dead ends: 38097 [2022-12-13 19:49:25,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:49:25,902 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 93 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:49:25,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2905 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:49:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38097 states. [2022-12-13 19:49:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38097 to 38097. [2022-12-13 19:49:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38097 states, 30072 states have (on average 1.544759244479915) internal successors, (46454), 30699 states have internal predecessors, (46454), 5620 states have call successors, (5620), 2034 states have call predecessors, (5620), 2404 states have return successors, (11362), 5550 states have call predecessors, (11362), 5572 states have call successors, (11362) [2022-12-13 19:49:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38097 states to 38097 states and 63436 transitions. [2022-12-13 19:49:34,099 INFO L78 Accepts]: Start accepts. Automaton has 38097 states and 63436 transitions. Word has length 175 [2022-12-13 19:49:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:49:34,099 INFO L495 AbstractCegarLoop]: Abstraction has 38097 states and 63436 transitions. [2022-12-13 19:49:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:49:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38097 states and 63436 transitions. [2022-12-13 19:49:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 19:49:34,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:49:34,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:49:34,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 19:49:34,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:49:34,303 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:49:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:49:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1303262191, now seen corresponding path program 1 times [2022-12-13 19:49:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:49:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868704224] [2022-12-13 19:49:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:49:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:49:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:49:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:49:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:49:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:49:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:49:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:49:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:49:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:49:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:49:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:49:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:49:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:49:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 19:49:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 19:49:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:49:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:49:34,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868704224] [2022-12-13 19:49:34,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868704224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:49:34,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819335462] [2022-12-13 19:49:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:49:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:49:34,732 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:49:34,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 19:49:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:34,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:49:34,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:49:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:49:35,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:49:35,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819335462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:49:35,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:49:35,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-12-13 19:49:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026738258] [2022-12-13 19:49:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:49:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:49:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:49:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:49:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:49:35,056 INFO L87 Difference]: Start difference. First operand 38097 states and 63436 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:49:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:49:57,014 INFO L93 Difference]: Finished difference Result 111571 states and 203260 transitions. [2022-12-13 19:49:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:49:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 176 [2022-12-13 19:49:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:49:57,327 INFO L225 Difference]: With dead ends: 111571 [2022-12-13 19:49:57,327 INFO L226 Difference]: Without dead ends: 73599 [2022-12-13 19:49:57,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-12-13 19:49:57,570 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 5588 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 1591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5698 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1591 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:49:57,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5698 Valid, 1172 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1591 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 19:49:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73599 states. [2022-12-13 19:50:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73599 to 62894. [2022-12-13 19:50:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62894 states, 49687 states have (on average 1.5386117093002194) internal successors, (76449), 50781 states have internal predecessors, (76449), 9275 states have call successors, (9275), 3299 states have call predecessors, (9275), 3931 states have return successors, (18433), 9154 states have call predecessors, (18433), 9222 states have call successors, (18433) [2022-12-13 19:50:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62894 states to 62894 states and 104157 transitions. [2022-12-13 19:50:12,278 INFO L78 Accepts]: Start accepts. Automaton has 62894 states and 104157 transitions. Word has length 176 [2022-12-13 19:50:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:50:12,279 INFO L495 AbstractCegarLoop]: Abstraction has 62894 states and 104157 transitions. [2022-12-13 19:50:12,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:50:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 62894 states and 104157 transitions. [2022-12-13 19:50:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-13 19:50:12,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:12,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:12,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 19:50:12,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 19:50:12,483 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1326305634, now seen corresponding path program 1 times [2022-12-13 19:50:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:12,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392837707] [2022-12-13 19:50:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:50:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:50:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:50:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:50:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:50:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:50:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:50:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:50:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:50:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:50:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:50:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:50:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 19:50:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 19:50:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:50:12,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:12,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392837707] [2022-12-13 19:50:12,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392837707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:50:12,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827473856] [2022-12-13 19:50:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:12,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:12,963 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:12,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 19:50:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:50:13,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:50:13,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:13,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827473856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:13,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:50:13,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-12-13 19:50:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152957191] [2022-12-13 19:50:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:13,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:50:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:50:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:50:13,259 INFO L87 Difference]: Start difference. First operand 62894 states and 104157 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:50:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:31,639 INFO L93 Difference]: Finished difference Result 123505 states and 205684 transitions. [2022-12-13 19:50:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:50:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 177 [2022-12-13 19:50:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:50:31,895 INFO L225 Difference]: With dead ends: 123505 [2022-12-13 19:50:31,895 INFO L226 Difference]: Without dead ends: 65027 [2022-12-13 19:50:32,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:50:32,135 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 3065 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 6685 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 7655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 6685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:50:32,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3182 Valid, 1905 Invalid, 7655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 6685 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 19:50:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65027 states. [2022-12-13 19:50:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65027 to 62840. [2022-12-13 19:50:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62840 states, 49633 states have (on average 1.5370217395684322) internal successors, (76287), 50727 states have internal predecessors, (76287), 9275 states have call successors, (9275), 3299 states have call predecessors, (9275), 3931 states have return successors, (18433), 9154 states have call predecessors, (18433), 9222 states have call successors, (18433) [2022-12-13 19:50:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62840 states to 62840 states and 103995 transitions. [2022-12-13 19:50:46,441 INFO L78 Accepts]: Start accepts. Automaton has 62840 states and 103995 transitions. Word has length 177 [2022-12-13 19:50:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:50:46,442 INFO L495 AbstractCegarLoop]: Abstraction has 62840 states and 103995 transitions. [2022-12-13 19:50:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 19:50:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 62840 states and 103995 transitions. [2022-12-13 19:50:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 19:50:46,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:50:46,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:50:46,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-12-13 19:50:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 19:50:46,646 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:50:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2063844280, now seen corresponding path program 1 times [2022-12-13 19:50:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:46,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166235581] [2022-12-13 19:50:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:50:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:50:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:50:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:50:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:50:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:50:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:50:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:50:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:50:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:50:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:50:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:50:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:50:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 19:50:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 19:50:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:50:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:47,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166235581] [2022-12-13 19:50:47,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166235581] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:50:47,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687305862] [2022-12-13 19:50:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:47,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:47,106 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:47,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 19:50:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:47,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:50:47,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:50:47,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:47,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687305862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:47,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:50:47,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-12-13 19:50:47,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467667474] [2022-12-13 19:50:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:50:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:50:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:50:47,305 INFO L87 Difference]: Start difference. First operand 62840 states and 103995 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:51:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:51:02,542 INFO L93 Difference]: Finished difference Result 127723 states and 218717 transitions. [2022-12-13 19:51:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:51:02,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 179 [2022-12-13 19:51:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:51:02,901 INFO L225 Difference]: With dead ends: 127723 [2022-12-13 19:51:02,901 INFO L226 Difference]: Without dead ends: 65035 [2022-12-13 19:51:03,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:51:03,343 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 3 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:51:03,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4039 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:51:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65035 states. [2022-12-13 19:51:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65035 to 63626. [2022-12-13 19:51:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63626 states, 50323 states have (on average 1.5296584066927648) internal successors, (76977), 51216 states have internal predecessors, (76977), 9275 states have call successors, (9275), 3299 states have call predecessors, (9275), 4027 states have return successors, (18731), 9451 states have call predecessors, (18731), 9222 states have call successors, (18731) [2022-12-13 19:51:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63626 states to 63626 states and 104983 transitions. [2022-12-13 19:51:17,818 INFO L78 Accepts]: Start accepts. Automaton has 63626 states and 104983 transitions. Word has length 179 [2022-12-13 19:51:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:17,818 INFO L495 AbstractCegarLoop]: Abstraction has 63626 states and 104983 transitions. [2022-12-13 19:51:17,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 19:51:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 63626 states and 104983 transitions. [2022-12-13 19:51:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 19:51:17,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:17,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 19:51:17,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 19:51:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 19:51:18,023 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1810416405, now seen corresponding path program 1 times [2022-12-13 19:51:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:18,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386236736] [2022-12-13 19:51:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 19:51:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 19:51:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 19:51:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:51:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:51:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 19:51:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 19:51:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:51:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:51:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:51:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:51:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:51:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 19:51:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 19:51:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 19:51:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:51:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 19:51:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 19:51:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 19:51:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 19:51:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386236736] [2022-12-13 19:51:18,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386236736] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:51:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985237241] [2022-12-13 19:51:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:18,469 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:18,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b204ab-b0e7-43c1-bac6-bb58e34dc38e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 19:51:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:51:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 19:51:18,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:51:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 19:51:19,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985237241] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:51:19,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:51:19,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 9] total 26 [2022-12-13 19:51:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167569701] [2022-12-13 19:51:19,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:51:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:51:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:51:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:51:19,159 INFO L87 Difference]: Start difference. First operand 63626 states and 104983 transitions. Second operand has 26 states, 26 states have (on average 11.115384615384615) internal successors, (289), 21 states have internal predecessors, (289), 10 states have call successors, (51), 10 states have call predecessors, (51), 12 states have return successors, (48), 15 states have call predecessors, (48), 10 states have call successors, (48)