./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8 --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 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- 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-e04fb08 [2022-11-16 11:17:49,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:17:49,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:17:49,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:17:49,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:17:49,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:17:49,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:17:49,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:17:49,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:17:49,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:17:49,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:17:49,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:17:49,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:17:49,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:17:49,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:17:49,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:17:49,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:17:49,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:17:49,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:17:49,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:17:49,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:17:49,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:17:49,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:17:49,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:17:49,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:17:49,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:17:49,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:17:49,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:17:49,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:17:49,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:17:49,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:17:49,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:17:49,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:17:49,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:17:49,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:17:49,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:17:49,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:17:49,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:17:49,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:17:49,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:17:49,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:17:49,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:17:49,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:17:49,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:17:49,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:17:49,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:17:49,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:17:49,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:17:49,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:17:49,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:17:49,620 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:17:49,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:17:49,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:17:49,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:17:49,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:17:49,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:17:49,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:17:49,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:17:49,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:17:49,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:17:49,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:17:49,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:17:49,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:17:49,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:17:49,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:17:49,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:17:49,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:49,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:17:49,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:17:49,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:17:49,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:17:49,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:17:49,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:17:49,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:17:49,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:17:49,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2022-11-16 11:17:49,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:17:49,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:17:49,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:17:49,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:17:49,934 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:17:49,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2022-11-16 11:17:50,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/data/e932b1e46/32c92795eb87447c9b5790efefcada3e/FLAGff1969547 [2022-11-16 11:17:50,710 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:17:50,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2022-11-16 11:17:50,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/data/e932b1e46/32c92795eb87447c9b5790efefcada3e/FLAGff1969547 [2022-11-16 11:17:50,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/data/e932b1e46/32c92795eb87447c9b5790efefcada3e [2022-11-16 11:17:50,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:17:50,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:17:50,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:50,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:17:50,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:17:50,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:50" (1/1) ... [2022-11-16 11:17:50,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfcd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:50, skipping insertion in model container [2022-11-16 11:17:50,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:50" (1/1) ... [2022-11-16 11:17:50,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:17:51,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:17:51,572 WARN L229 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_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2022-11-16 11:17:51,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:51,707 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:17:51,770 WARN L229 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_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2022-11-16 11:17:51,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:51,833 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:17:51,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51 WrapperNode [2022-11-16 11:17:51,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:51,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:51,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:17:51,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:17:51,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,935 INFO L138 Inliner]: procedures = 86, calls = 334, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 750 [2022-11-16 11:17:51,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:51,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:17:51,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:17:51,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:17:51,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:51,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:52,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:52,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:52,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:17:52,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:17:52,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:17:52,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:17:52,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (1/1) ... [2022-11-16 11:17:52,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:52,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:52,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:17:52,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:17:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-16 11:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-16 11:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-16 11:17:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-16 11:17:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-16 11:17:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-16 11:17:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-16 11:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-16 11:17:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-16 11:17:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-16 11:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 11:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 11:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 11:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 11:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-16 11:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-16 11:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-16 11:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-16 11:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-16 11:17:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-16 11:17:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-16 11:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-16 11:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-16 11:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-16 11:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-16 11:17:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-16 11:17:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-16 11:17:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-16 11:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-16 11:17:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-16 11:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-16 11:17:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-16 11:17:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-16 11:17:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-16 11:17:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-16 11:17:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-16 11:17:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:17:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-16 11:17:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-16 11:17:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-16 11:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-16 11:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-16 11:17:52,153 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-16 11:17:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-16 11:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-16 11:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:17:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-16 11:17:52,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-16 11:17:52,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:17:52,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:17:53,715 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:17:53,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:17:53,739 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:17:53,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:53 BoogieIcfgContainer [2022-11-16 11:17:53,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:17:53,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:17:53,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:17:53,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:17:53,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:17:50" (1/3) ... [2022-11-16 11:17:53,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf3a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:53, skipping insertion in model container [2022-11-16 11:17:53,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:51" (2/3) ... [2022-11-16 11:17:53,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbf3a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:53, skipping insertion in model container [2022-11-16 11:17:53,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:53" (3/3) ... [2022-11-16 11:17:53,755 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2022-11-16 11:17:53,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:17:53,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:17:53,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:17:53,859 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;@35b22a64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:17:53,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:17:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 546 states, 423 states have (on average 1.6926713947990544) internal successors, (716), 441 states have internal predecessors, (716), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-16 11:17:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 11:17:53,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:53,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:53,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:17:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1392442594, now seen corresponding path program 1 times [2022-11-16 11:17:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:53,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824983338] [2022-11-16 11:17:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:17:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:17:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:17:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:17:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:17:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:17:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:17:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:17:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:17:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 11:17:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:17:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:55,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824983338] [2022-11-16 11:17:55,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824983338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:55,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:55,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:17:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754830105] [2022-11-16 11:17:55,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:55,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:17:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:17:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:17:55,520 INFO L87 Difference]: Start difference. First operand has 546 states, 423 states have (on average 1.6926713947990544) internal successors, (716), 441 states have internal predecessors, (716), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:05,739 INFO L93 Difference]: Finished difference Result 1437 states and 2504 transitions. [2022-11-16 11:18:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:18:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 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 85 [2022-11-16 11:18:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:05,763 INFO L225 Difference]: With dead ends: 1437 [2022-11-16 11:18:05,763 INFO L226 Difference]: Without dead ends: 891 [2022-11-16 11:18:05,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:18:05,777 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 2168 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5474 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 6182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 5474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:05,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 3171 Invalid, 6182 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [708 Valid, 5474 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-16 11:18:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-16 11:18:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 549. [2022-11-16 11:18:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6830985915492958) internal successors, (717), 444 states have internal predecessors, (717), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-11-16 11:18:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 914 transitions. [2022-11-16 11:18:06,104 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 914 transitions. Word has length 85 [2022-11-16 11:18:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:06,105 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 914 transitions. [2022-11-16 11:18:06,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 914 transitions. [2022-11-16 11:18:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 11:18:06,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:06,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:06,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:18:06,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1014456678, now seen corresponding path program 1 times [2022-11-16 11:18:06,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:06,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662399762] [2022-11-16 11:18:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:06,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:18:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:18:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:18:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:18:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:18:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662399762] [2022-11-16 11:18:06,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662399762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:06,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:06,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:18:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835857895] [2022-11-16 11:18:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:06,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:18:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:18:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:06,883 INFO L87 Difference]: Start difference. First operand 549 states and 914 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:16,126 INFO L93 Difference]: Finished difference Result 1427 states and 2450 transitions. [2022-11-16 11:18:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:18:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-11-16 11:18:16,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:16,136 INFO L225 Difference]: With dead ends: 1427 [2022-11-16 11:18:16,136 INFO L226 Difference]: Without dead ends: 894 [2022-11-16 11:18:16,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:18:16,142 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 2120 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 6228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:16,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 3009 Invalid, 6228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [710 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-16 11:18:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-11-16 11:18:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 549. [2022-11-16 11:18:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6807511737089202) internal successors, (716), 444 states have internal predecessors, (716), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-11-16 11:18:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 913 transitions. [2022-11-16 11:18:16,349 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 913 transitions. Word has length 86 [2022-11-16 11:18:16,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:16,350 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 913 transitions. [2022-11-16 11:18:16,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 913 transitions. [2022-11-16 11:18:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 11:18:16,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:16,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:16,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:18:16,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -966487335, now seen corresponding path program 1 times [2022-11-16 11:18:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:16,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343328171] [2022-11-16 11:18:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:16,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:18:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:18:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:18:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:18:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 11:18:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:18:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:16,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343328171] [2022-11-16 11:18:16,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343328171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:16,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:16,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:18:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491845555] [2022-11-16 11:18:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:18:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:18:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:18:16,822 INFO L87 Difference]: Start difference. First operand 549 states and 913 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 11:18:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:24,495 INFO L93 Difference]: Finished difference Result 1418 states and 2430 transitions. [2022-11-16 11:18:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:18:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 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 86 [2022-11-16 11:18:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:24,502 INFO L225 Difference]: With dead ends: 1418 [2022-11-16 11:18:24,503 INFO L226 Difference]: Without dead ends: 854 [2022-11-16 11:18:24,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:24,508 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1510 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 1685 Invalid, 3582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [507 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 11:18:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-16 11:18:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 525. [2022-11-16 11:18:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.671604938271605) internal successors, (677), 421 states have internal predecessors, (677), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:18:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 870 transitions. [2022-11-16 11:18:24,660 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 870 transitions. Word has length 86 [2022-11-16 11:18:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:24,661 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 870 transitions. [2022-11-16 11:18:24,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 11:18:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 870 transitions. [2022-11-16 11:18:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 11:18:24,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:24,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:24,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:18:24,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1381384110, now seen corresponding path program 1 times [2022-11-16 11:18:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:24,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834992211] [2022-11-16 11:18:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 11:18:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:18:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:18:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:18:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:18:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:25,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834992211] [2022-11-16 11:18:25,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834992211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:25,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:25,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:18:25,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671483252] [2022-11-16 11:18:25,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:25,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:18:25,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:25,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:18:25,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:25,331 INFO L87 Difference]: Start difference. First operand 525 states and 870 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:34,338 INFO L93 Difference]: Finished difference Result 1381 states and 2361 transitions. [2022-11-16 11:18:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:18:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 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 87 [2022-11-16 11:18:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:34,348 INFO L225 Difference]: With dead ends: 1381 [2022-11-16 11:18:34,348 INFO L226 Difference]: Without dead ends: 848 [2022-11-16 11:18:34,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:18:34,363 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1063 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 5522 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 5835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:34,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 3121 Invalid, 5835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 5522 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-16 11:18:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-16 11:18:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 519. [2022-11-16 11:18:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 399 states have (on average 1.6641604010025062) internal successors, (664), 415 states have internal predecessors, (664), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:18:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 857 transitions. [2022-11-16 11:18:34,533 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 857 transitions. Word has length 87 [2022-11-16 11:18:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:34,534 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 857 transitions. [2022-11-16 11:18:34,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 857 transitions. [2022-11-16 11:18:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 11:18:34,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:34,537 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:18:34,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:18:34,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1747964786, now seen corresponding path program 1 times [2022-11-16 11:18:34,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:34,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818919838] [2022-11-16 11:18:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:34,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:18:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:18:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:18:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:18:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:18:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818919838] [2022-11-16 11:18:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818919838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:18:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110119136] [2022-11-16 11:18:35,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:35,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:18:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:18:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:35,148 INFO L87 Difference]: Start difference. First operand 519 states and 857 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:43,978 INFO L93 Difference]: Finished difference Result 1351 states and 2310 transitions. [2022-11-16 11:18:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:18:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-11-16 11:18:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:43,985 INFO L225 Difference]: With dead ends: 1351 [2022-11-16 11:18:43,986 INFO L226 Difference]: Without dead ends: 848 [2022-11-16 11:18:43,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:18:43,990 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 988 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 5393 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 5704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 5393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:43,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 3212 Invalid, 5704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 5393 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-16 11:18:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-16 11:18:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 519. [2022-11-16 11:18:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 399 states have (on average 1.6616541353383458) internal successors, (663), 415 states have internal predecessors, (663), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:18:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 856 transitions. [2022-11-16 11:18:44,182 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 856 transitions. Word has length 88 [2022-11-16 11:18:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:44,182 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 856 transitions. [2022-11-16 11:18:44,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 856 transitions. [2022-11-16 11:18:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:18:44,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:44,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:44,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:18:44,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash 502990475, now seen corresponding path program 1 times [2022-11-16 11:18:44,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:44,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754074107] [2022-11-16 11:18:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:44,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:18:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:18:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 11:18:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:18:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:18:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:44,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:44,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754074107] [2022-11-16 11:18:44,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754074107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:44,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:44,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:18:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881914664] [2022-11-16 11:18:44,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:44,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:18:44,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:18:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:44,719 INFO L87 Difference]: Start difference. First operand 519 states and 856 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:53,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:18:53,520 INFO L93 Difference]: Finished difference Result 1369 states and 2330 transitions. [2022-11-16 11:18:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:18:53,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 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 89 [2022-11-16 11:18:53,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:18:53,527 INFO L225 Difference]: With dead ends: 1369 [2022-11-16 11:18:53,528 INFO L226 Difference]: Without dead ends: 842 [2022-11-16 11:18:53,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:18:53,531 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1033 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 5714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:18:53,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3177 Invalid, 5714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [316 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-16 11:18:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-16 11:18:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 513. [2022-11-16 11:18:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6539440203562341) internal successors, (650), 409 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:18:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 843 transitions. [2022-11-16 11:18:53,701 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 843 transitions. Word has length 89 [2022-11-16 11:18:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:18:53,701 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 843 transitions. [2022-11-16 11:18:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:18:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 843 transitions. [2022-11-16 11:18:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 11:18:53,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:18:53,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:18:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:18:53,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:18:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:18:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1402442320, now seen corresponding path program 1 times [2022-11-16 11:18:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:18:53,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75683564] [2022-11-16 11:18:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:18:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:18:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:18:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:18:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:18:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:18:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:18:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:18:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 11:18:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-16 11:18:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:18:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:18:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:18:54,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75683564] [2022-11-16 11:18:54,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75683564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:18:54,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:18:54,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:18:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531179018] [2022-11-16 11:18:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:18:54,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:18:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:18:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:18:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:18:54,250 INFO L87 Difference]: Start difference. First operand 513 states and 843 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:02,974 INFO L93 Difference]: Finished difference Result 1339 states and 2281 transitions. [2022-11-16 11:19:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:19:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-11-16 11:19:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:02,981 INFO L225 Difference]: With dead ends: 1339 [2022-11-16 11:19:02,981 INFO L226 Difference]: Without dead ends: 842 [2022-11-16 11:19:02,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:19:02,984 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 965 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 5247 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:02,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 3255 Invalid, 5560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 5247 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 11:19:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-16 11:19:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 513. [2022-11-16 11:19:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6513994910941476) internal successors, (649), 409 states have internal predecessors, (649), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:19:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 842 transitions. [2022-11-16 11:19:03,167 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 842 transitions. Word has length 90 [2022-11-16 11:19:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:03,168 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 842 transitions. [2022-11-16 11:19:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 842 transitions. [2022-11-16 11:19:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:19:03,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:03,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:03,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:19:03,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1761311218, now seen corresponding path program 1 times [2022-11-16 11:19:03,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:03,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428481756] [2022-11-16 11:19:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:19:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:19:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:19:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:19:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:19:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:19:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:03,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428481756] [2022-11-16 11:19:03,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428481756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:03,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:03,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893934549] [2022-11-16 11:19:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:03,715 INFO L87 Difference]: Start difference. First operand 513 states and 842 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:12,297 INFO L93 Difference]: Finished difference Result 1360 states and 2303 transitions. [2022-11-16 11:19:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:19:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-16 11:19:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:12,304 INFO L225 Difference]: With dead ends: 1360 [2022-11-16 11:19:12,305 INFO L226 Difference]: Without dead ends: 863 [2022-11-16 11:19:12,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:19:12,308 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1949 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 5815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 3056 Invalid, 5815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 11:19:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-16 11:19:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 518. [2022-11-16 11:19:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 398 states have (on average 1.64321608040201) internal successors, (654), 414 states have internal predecessors, (654), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:19:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 847 transitions. [2022-11-16 11:19:12,497 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 847 transitions. Word has length 91 [2022-11-16 11:19:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:12,497 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 847 transitions. [2022-11-16 11:19:12,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 847 transitions. [2022-11-16 11:19:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:19:12,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:12,501 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:12,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:19:12,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:12,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash -110382417, now seen corresponding path program 1 times [2022-11-16 11:19:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596257375] [2022-11-16 11:19:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:19:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:19:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:19:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:19:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 11:19:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:19:12,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:12,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596257375] [2022-11-16 11:19:12,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596257375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:12,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:12,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570813804] [2022-11-16 11:19:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:12,993 INFO L87 Difference]: Start difference. First operand 518 states and 847 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:21,811 INFO L93 Difference]: Finished difference Result 1362 states and 2302 transitions. [2022-11-16 11:19:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:19:21,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 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 91 [2022-11-16 11:19:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:21,819 INFO L225 Difference]: With dead ends: 1362 [2022-11-16 11:19:21,819 INFO L226 Difference]: Without dead ends: 836 [2022-11-16 11:19:21,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:19:21,823 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1006 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 5315 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 5315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:21,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 3127 Invalid, 5629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [314 Valid, 5315 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 11:19:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-16 11:19:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 507. [2022-11-16 11:19:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6408268733850129) internal successors, (635), 403 states have internal predecessors, (635), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:19:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 828 transitions. [2022-11-16 11:19:21,999 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 828 transitions. Word has length 91 [2022-11-16 11:19:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:22,000 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 828 transitions. [2022-11-16 11:19:22,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 828 transitions. [2022-11-16 11:19:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:19:22,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:22,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:22,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:19:22,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2098870037, now seen corresponding path program 1 times [2022-11-16 11:19:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:22,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981115824] [2022-11-16 11:19:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:19:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:19:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:19:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:19:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:19:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:19:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981115824] [2022-11-16 11:19:22,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981115824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:22,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:22,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:22,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203253555] [2022-11-16 11:19:22,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:22,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:22,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:22,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:22,529 INFO L87 Difference]: Start difference. First operand 507 states and 828 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:31,382 INFO L93 Difference]: Finished difference Result 1339 states and 2262 transitions. [2022-11-16 11:19:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:19:31,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-16 11:19:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:31,388 INFO L225 Difference]: With dead ends: 1339 [2022-11-16 11:19:31,388 INFO L226 Difference]: Without dead ends: 848 [2022-11-16 11:19:31,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:19:31,390 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1400 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:31,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 3172 Invalid, 5662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [504 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-16 11:19:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-16 11:19:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 513. [2022-11-16 11:19:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6310432569974556) internal successors, (641), 409 states have internal predecessors, (641), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:19:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 834 transitions. [2022-11-16 11:19:31,550 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 834 transitions. Word has length 92 [2022-11-16 11:19:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:31,550 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 834 transitions. [2022-11-16 11:19:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 834 transitions. [2022-11-16 11:19:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:19:31,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:31,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:19:31,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash -935180009, now seen corresponding path program 1 times [2022-11-16 11:19:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:31,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89475187] [2022-11-16 11:19:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:31,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:19:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:19:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 11:19:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 11:19:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:19:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:19:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:32,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89475187] [2022-11-16 11:19:32,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89475187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:32,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:32,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731751180] [2022-11-16 11:19:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:32,118 INFO L87 Difference]: Start difference. First operand 513 states and 834 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:40,288 INFO L93 Difference]: Finished difference Result 1342 states and 2263 transitions. [2022-11-16 11:19:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:19:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 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 92 [2022-11-16 11:19:40,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:40,294 INFO L225 Difference]: With dead ends: 1342 [2022-11-16 11:19:40,295 INFO L226 Difference]: Without dead ends: 836 [2022-11-16 11:19:40,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:19:40,298 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1446 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:40,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3069 Invalid, 5499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [511 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-16 11:19:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-16 11:19:40,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 507. [2022-11-16 11:19:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6382428940568476) internal successors, (634), 403 states have internal predecessors, (634), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-16 11:19:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 827 transitions. [2022-11-16 11:19:40,464 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 827 transitions. Word has length 92 [2022-11-16 11:19:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:40,464 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 827 transitions. [2022-11-16 11:19:40,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 827 transitions. [2022-11-16 11:19:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:40,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:40,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:19:40,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -511516108, now seen corresponding path program 1 times [2022-11-16 11:19:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:40,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045507092] [2022-11-16 11:19:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:19:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:19:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:19:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:19:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:19:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:41,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045507092] [2022-11-16 11:19:41,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045507092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487889625] [2022-11-16 11:19:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:41,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:41,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:41,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:19:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:19:41,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:41,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:41,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487889625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:41,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:41,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:19:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378086566] [2022-11-16 11:19:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:19:41,515 INFO L87 Difference]: Start difference. First operand 507 states and 827 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:42,037 INFO L93 Difference]: Finished difference Result 1433 states and 2371 transitions. [2022-11-16 11:19:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:42,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-11-16 11:19:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:42,043 INFO L225 Difference]: With dead ends: 1433 [2022-11-16 11:19:42,043 INFO L226 Difference]: Without dead ends: 944 [2022-11-16 11:19:42,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:19:42,047 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 773 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:42,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1634 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-16 11:19:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 929. [2022-11-16 11:19:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 716 states have (on average 1.6536312849162011) internal successors, (1184), 747 states have internal predecessors, (1184), 172 states have call successors, (172), 41 states have call predecessors, (172), 40 states have return successors, (174), 166 states have call predecessors, (174), 169 states have call successors, (174) [2022-11-16 11:19:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1530 transitions. [2022-11-16 11:19:42,349 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1530 transitions. Word has length 93 [2022-11-16 11:19:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:42,350 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1530 transitions. [2022-11-16 11:19:42,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1530 transitions. [2022-11-16 11:19:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:19:42,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:42,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:42,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:42,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash 807187692, now seen corresponding path program 1 times [2022-11-16 11:19:42,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:42,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161136075] [2022-11-16 11:19:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:42,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:19:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:19:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:19:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 11:19:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 11:19:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161136075] [2022-11-16 11:19:43,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161136075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185268495] [2022-11-16 11:19:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:43,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:43,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:43,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:43,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:19:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:19:43,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:43,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:43,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185268495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:43,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:43,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:19:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123967668] [2022-11-16 11:19:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:43,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:19:43,686 INFO L87 Difference]: Start difference. First operand 929 states and 1530 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:44,210 INFO L93 Difference]: Finished difference Result 2277 states and 3779 transitions. [2022-11-16 11:19:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-11-16 11:19:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:44,219 INFO L225 Difference]: With dead ends: 2277 [2022-11-16 11:19:44,219 INFO L226 Difference]: Without dead ends: 1366 [2022-11-16 11:19:44,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:19:44,225 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 772 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:44,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1686 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-11-16 11:19:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1318. [2022-11-16 11:19:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1018 states have (on average 1.6679764243614932) internal successors, (1698), 1064 states have internal predecessors, (1698), 243 states have call successors, (243), 56 states have call predecessors, (243), 56 states have return successors, (250), 236 states have call predecessors, (250), 240 states have call successors, (250) [2022-11-16 11:19:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2191 transitions. [2022-11-16 11:19:44,810 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2191 transitions. Word has length 94 [2022-11-16 11:19:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:44,810 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2191 transitions. [2022-11-16 11:19:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 11:19:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2191 transitions. [2022-11-16 11:19:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 11:19:44,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:44,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:44,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:19:45,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -174226734, now seen corresponding path program 1 times [2022-11-16 11:19:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:45,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334796917] [2022-11-16 11:19:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:19:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:19:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:19:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:19:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:19:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:19:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:19:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:19:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 11:19:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:19:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334796917] [2022-11-16 11:19:45,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334796917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:45,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:45,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:19:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331100663] [2022-11-16 11:19:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:45,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:19:45,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:19:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:19:45,555 INFO L87 Difference]: Start difference. First operand 1318 states and 2191 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:20:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:10,947 INFO L93 Difference]: Finished difference Result 6602 states and 12169 transitions. [2022-11-16 11:20:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:20:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-11-16 11:20:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:10,996 INFO L225 Difference]: With dead ends: 6602 [2022-11-16 11:20:10,996 INFO L226 Difference]: Without dead ends: 5302 [2022-11-16 11:20:11,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:20:11,009 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 4660 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 8176 mSolverCounterSat, 2756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4769 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 10932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2756 IncrementalHoareTripleChecker+Valid, 8176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:11,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4769 Valid, 3471 Invalid, 10932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2756 Valid, 8176 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2022-11-16 11:20:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-11-16 11:20:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3149. [2022-11-16 11:20:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 2283 states have (on average 1.6386333771353483) internal successors, (3741), 2467 states have internal predecessors, (3741), 721 states have call successors, (721), 106 states have call predecessors, (721), 144 states have return successors, (1148), 719 states have call predecessors, (1148), 717 states have call successors, (1148) [2022-11-16 11:20:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 5610 transitions. [2022-11-16 11:20:12,986 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 5610 transitions. Word has length 96 [2022-11-16 11:20:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 3149 states and 5610 transitions. [2022-11-16 11:20:12,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:20:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 5610 transitions. [2022-11-16 11:20:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-16 11:20:12,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:12,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:20:12,994 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:20:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 211190178, now seen corresponding path program 1 times [2022-11-16 11:20:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:12,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429060282] [2022-11-16 11:20:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:20:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:20:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:20:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:20:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:20:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 11:20:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 11:20:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:20:13,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429060282] [2022-11-16 11:20:13,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429060282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858537457] [2022-11-16 11:20:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:13,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:13,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:13,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:13,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:20:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:13,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:20:13,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:14,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:14,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858537457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:14,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:14,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:20:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107352070] [2022-11-16 11:20:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:20:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:20:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:20:14,101 INFO L87 Difference]: Start difference. First operand 3149 states and 5610 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:20:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:16,916 INFO L93 Difference]: Finished difference Result 9157 states and 16523 transitions. [2022-11-16 11:20:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:20:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-16 11:20:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:16,965 INFO L225 Difference]: With dead ends: 9157 [2022-11-16 11:20:16,965 INFO L226 Difference]: Without dead ends: 6027 [2022-11-16 11:20:16,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:20:16,993 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 682 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:16,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1675 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:20:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2022-11-16 11:20:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 5990. [2022-11-16 11:20:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5990 states, 4316 states have (on average 1.607970342910102) internal successors, (6940), 4682 states have internal predecessors, (6940), 1390 states have call successors, (1390), 206 states have call predecessors, (1390), 283 states have return successors, (2335), 1389 states have call predecessors, (2335), 1384 states have call successors, (2335) [2022-11-16 11:20:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5990 states to 5990 states and 10665 transitions. [2022-11-16 11:20:19,756 INFO L78 Accepts]: Start accepts. Automaton has 5990 states and 10665 transitions. Word has length 97 [2022-11-16 11:20:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:19,756 INFO L495 AbstractCegarLoop]: Abstraction has 5990 states and 10665 transitions. [2022-11-16 11:20:19,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:20:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5990 states and 10665 transitions. [2022-11-16 11:20:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:20:19,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:19,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:19,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:20:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:19,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:20:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -6863433, now seen corresponding path program 1 times [2022-11-16 11:20:19,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910075735] [2022-11-16 11:20:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:20:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:20:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:20:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:20:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:20:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:20:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:20:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:20:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:20:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:20,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910075735] [2022-11-16 11:20:20,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910075735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:20,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613818951] [2022-11-16 11:20:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:20,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:20,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:20:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:20:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:20,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:20,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613818951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:20,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:20,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 12 [2022-11-16 11:20:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905757374] [2022-11-16 11:20:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:20:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:20:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:20:20,967 INFO L87 Difference]: Start difference. First operand 5990 states and 10665 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:20:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:26,496 INFO L93 Difference]: Finished difference Result 17856 states and 32104 transitions. [2022-11-16 11:20:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:20:26,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-16 11:20:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:26,575 INFO L225 Difference]: With dead ends: 17856 [2022-11-16 11:20:26,575 INFO L226 Difference]: Without dead ends: 11887 [2022-11-16 11:20:26,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:20:26,604 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 814 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:26,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:20:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2022-11-16 11:20:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11784. [2022-11-16 11:20:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11784 states, 8508 states have (on average 1.6110719322990128) internal successors, (13707), 9220 states have internal predecessors, (13707), 2720 states have call successors, (2720), 394 states have call predecessors, (2720), 555 states have return successors, (4652), 2739 states have call predecessors, (4652), 2710 states have call successors, (4652) [2022-11-16 11:20:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11784 states to 11784 states and 21079 transitions. [2022-11-16 11:20:32,305 INFO L78 Accepts]: Start accepts. Automaton has 11784 states and 21079 transitions. Word has length 102 [2022-11-16 11:20:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:32,306 INFO L495 AbstractCegarLoop]: Abstraction has 11784 states and 21079 transitions. [2022-11-16 11:20:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:20:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11784 states and 21079 transitions. [2022-11-16 11:20:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:20:32,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:32,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:32,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:32,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:20:32,518 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:20:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1017980683, now seen corresponding path program 1 times [2022-11-16 11:20:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:32,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083341803] [2022-11-16 11:20:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:32,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:32,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:20:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:20:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:20:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:20:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:20:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:20:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 11:20:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:20:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:20:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:33,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083341803] [2022-11-16 11:20:33,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083341803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:33,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886172967] [2022-11-16 11:20:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:33,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:33,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:20:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:33,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:20:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:20:33,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:33,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886172967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:33,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:33,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-16 11:20:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031867960] [2022-11-16 11:20:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:33,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:20:33,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:20:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:20:33,555 INFO L87 Difference]: Start difference. First operand 11784 states and 21079 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:20:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:20:41,274 INFO L93 Difference]: Finished difference Result 24013 states and 43453 transitions. [2022-11-16 11:20:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:20:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2022-11-16 11:20:41,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:20:41,356 INFO L225 Difference]: With dead ends: 24013 [2022-11-16 11:20:41,356 INFO L226 Difference]: Without dead ends: 12247 [2022-11-16 11:20:41,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:20:41,430 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 989 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3774 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:20:41,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 3774 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:20:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12247 states. [2022-11-16 11:20:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12247 to 10479. [2022-11-16 11:20:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10479 states, 7607 states have (on average 1.5970816353358748) internal successors, (12149), 8210 states have internal predecessors, (12149), 2370 states have call successors, (2370), 358 states have call predecessors, (2370), 501 states have return successors, (3994), 2386 states have call predecessors, (3994), 2360 states have call successors, (3994) [2022-11-16 11:20:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 18513 transitions. [2022-11-16 11:20:46,843 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 18513 transitions. Word has length 102 [2022-11-16 11:20:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:20:46,844 INFO L495 AbstractCegarLoop]: Abstraction has 10479 states and 18513 transitions. [2022-11-16 11:20:46,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:20:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 18513 transitions. [2022-11-16 11:20:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:20:46,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:20:46,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:46,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:47,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65c319eb-0d4b-4cfb-ba54-a539b42f8d3a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:20:47,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:20:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -917707351, now seen corresponding path program 1 times [2022-11-16 11:20:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:47,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928791455] [2022-11-16 11:20:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:47,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:20:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:20:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:20:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:20:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:20:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:20:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 11:20:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:20:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 11:20:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:20:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:20:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928791455] [2022-11-16 11:20:47,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928791455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:47,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:20:47,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:20:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087968400] [2022-11-16 11:20:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:20:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:20:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:20:47,596 INFO L87 Difference]: Start difference. First operand 10479 states and 18513 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:21:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:01,532 INFO L93 Difference]: Finished difference Result 24082 states and 43824 transitions. [2022-11-16 11:21:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:21:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-16 11:21:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:01,667 INFO L225 Difference]: With dead ends: 24082 [2022-11-16 11:21:01,667 INFO L226 Difference]: Without dead ends: 13621 [2022-11-16 11:21:01,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:21:01,777 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1366 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:01,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1806 Invalid, 3335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [490 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:21:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13621 states. [2022-11-16 11:21:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13621 to 10621. [2022-11-16 11:21:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10621 states, 7719 states have (on average 1.5904909962430367) internal successors, (12277), 8322 states have internal predecessors, (12277), 2380 states have call successors, (2380), 366 states have call predecessors, (2380), 521 states have return successors, (4049), 2392 states have call predecessors, (4049), 2370 states have call successors, (4049) [2022-11-16 11:21:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 18706 transitions. [2022-11-16 11:21:07,283 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 18706 transitions. Word has length 102 [2022-11-16 11:21:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:07,284 INFO L495 AbstractCegarLoop]: Abstraction has 10621 states and 18706 transitions. [2022-11-16 11:21:07,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:21:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 18706 transitions. [2022-11-16 11:21:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 11:21:07,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:07,288 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:21:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:21:07,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash -810615909, now seen corresponding path program 1 times [2022-11-16 11:21:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140275986] [2022-11-16 11:21:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:07,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:21:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:21:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:21:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:21:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:21:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:21:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:21:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:21:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 11:21:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:21:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:21:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 11:21:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:21:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:21:07,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140275986] [2022-11-16 11:21:07,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140275986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:07,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:07,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:21:07,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728914671] [2022-11-16 11:21:07,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:21:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:21:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:21:07,786 INFO L87 Difference]: Start difference. First operand 10621 states and 18706 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:21:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:53,035 INFO L93 Difference]: Finished difference Result 46846 states and 91993 transitions. [2022-11-16 11:21:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:21:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-11-16 11:21:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:53,346 INFO L225 Difference]: With dead ends: 46846 [2022-11-16 11:21:53,346 INFO L226 Difference]: Without dead ends: 36243 [2022-11-16 11:21:53,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:21:53,452 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 4646 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 8188 mSolverCounterSat, 2767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4755 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 10955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2767 IncrementalHoareTripleChecker+Valid, 8188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:53,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4755 Valid, 3840 Invalid, 10955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2767 Valid, 8188 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2022-11-16 11:21:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36243 states. [2022-11-16 11:22:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36243 to 21105. [2022-11-16 11:22:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21105 states, 15344 states have (on average 1.5872002085505734) internal successors, (24354), 16541 states have internal predecessors, (24354), 4715 states have call successors, (4715), 726 states have call predecessors, (4715), 1045 states have return successors, (8855), 4757 states have call predecessors, (8855), 4697 states have call successors, (8855) [2022-11-16 11:22:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21105 states to 21105 states and 37924 transitions. [2022-11-16 11:22:06,177 INFO L78 Accepts]: Start accepts. Automaton has 21105 states and 37924 transitions. Word has length 110 [2022-11-16 11:22:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:06,177 INFO L495 AbstractCegarLoop]: Abstraction has 21105 states and 37924 transitions. [2022-11-16 11:22:06,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:22:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 21105 states and 37924 transitions. [2022-11-16 11:22:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 11:22:06,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:06,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:22:06,182 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:22:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1189412675, now seen corresponding path program 1 times [2022-11-16 11:22:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:22:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537712491] [2022-11-16 11:22:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:22:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:22:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:22:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:22:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:22:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:22:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:22:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:22:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 11:22:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 11:22:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-16 11:22:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:22:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:22:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:22:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:22:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:22:06,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537712491] [2022-11-16 11:22:06,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537712491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:22:06,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:22:06,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:22:06,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858088765] [2022-11-16 11:22:06,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:22:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:22:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:22:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:22:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:22:06,576 INFO L87 Difference]: Start difference. First operand 21105 states and 37924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)